1 - Adding Content

Add different types of content to your Docsy site.

So you’ve got a new Hugo website with Docsy, now it’s time to add some content! This page tells you how to use the theme to add and structure your site content.

Content root directory

You add content for your site under the content root directory of your Hugo site project - either content/ or a language-specific root like content/en/. The main exception here is static files that you don’t want built into your site: you can find out more about where you add these below in Adding static content. The files in your content root directory are typically grouped in subdirectories corresponding to your site’s sections and templates, which we’ll look at in Content sections and templates.

You can find out more about Hugo directory structure in Directory Structure Explained.

Content sections and templates

Hugo builds your site pages using the content files you provide plus any templates provided by your site’s theme. These templates (or “layouts” in Hugo terminology) include things like your page’s headers, footers, navigation, and links to stylesheets: essentially, everything except your page’s specific content. The templates in turn can be made up of partials: little reusable snippets of HTML for page elements like headers, search boxes, and more.

Because most technical documentation sites have different sections for different types of content, the Docsy theme comes with the following templates for top-level site sections that you might need:

  • docs is for pages in your site’s Documentation section.
  • blog is for pages in your site’s Blog.
  • community is for your site’s Community page.

It also provides a default “landing page” type of template with the site header and footer, but no left nav, that you can use for any other section. In this site and our example site it’s used for the site home page and the About page.

Each top-level section in your site corresponds to a directory in your site content root. Hugo automatically applies the appropriate template for that section, depending on which folder the content is in. For example, this page is in the docs subdirectory of the site’s content root directory content/en/, so Hugo automatically applies the docs template. You can override this by explicitly specifying a template or content type for a particular page.

If you’ve copied the example site, you already have appropriately named top-level section directories for using Docsy’s templates, each with an index page ( _index.md or index.html) page for users to land on. These top-level sections also appear in the example site’s top-level menu.

Custom sections

If you’ve copied the example site and don’t want to use one of the provided content sections, just delete the appropriate content subdirectory. Similarly, if you want to add a top-level section, just add a new subdirectory, though you’ll need to specify the layout or content type explicitly in the frontmatter of each page if you want to use any existing Docsy template other than the default one. For example, if you create a new directory content/en/amazing and want one or more pages in that custom section to use Docsy’s docs template, you add type: docs to the frontmatter of each page:

+++
title = "My amazing new section"
weight = 1
type = "docs"
description = '''
A special section with a docs layout.
'''
+++
---
title: "My amazing new section"
weight: 1
type: docs
description: >
  A special section with a docs layout.  
---
{
  "title": "My amazing new section",
  "weight": 1,
  "type": "docs",
  "description": "A special section with a docs layout.\n"
}

Alternatively, create your own page template for your new section in your project’s layouts directory based on one of the existing templates.

You can find out much more about how Hugo page layouts work in Hugo Templates. The rest of this page tells you about how to add content and use each of Docsy’s templates.

Alternative site structure

As noted above, by default your site has a home page (using the _default layout), a docs section under /docs/, a blog section under /blog/ and a community section under /community/. The type of each section (which determines the layout it uses) matches its directory name.

In some cases, you may want to have a different directory structure, but still make use of Docsy’s layouts. A common example is for a “docs site”, where most of the pages (including the home page) use the docs layout, or perhaps you’d rather have a /news/ directory treated with the blog layout.

Since Hugo 0.76, this has become practical without copying layouts to your site, or having to specify type: blog on every single page by making use of target specific cascading front matter.

For example, for the /news/ section, you can specify the following front matter in the index page which will change the type of the section and everything below it to “blog”:

+++
title = "Latest News"
linkTitle = "News"

[menu.main]
weight = 30

[[cascade]]
type = "blog"
+++
---
title: "Latest News"
linkTitle: "News"
menu:
  main:
    weight: 30

cascade:
  - type: "blog"
---
{
  "title": "Latest News",
  "linkTitle": "News",
  "menu": {
    "main": {
      "weight": 30
    }
  },
  "cascade": [
    {
      "type": "blog"
    }
  ]
}

If you want to create a “docs” site, specifying something like the following in the top level _index.md will set all top level sections to be treated as “docs”, except for “news”:

+++
title = "My Wonderful Site"

[[cascade]]
type = "blog"
toc_root = true

  [cascade._target]
  path = "/news/**"

[[cascade]]
type = "docs"

  [cascade._target]
  path = "/**"
+++
---
title: "My Wonderful Site"

cascade:
  - type: "blog"
    toc_root: true
    _target:
    path: "/news/**"
  - type: "docs"
    _target:
    path: "/**"
---
{
  "title": "My Wonderful Site",
  "cascade": [
    {
      "type": "blog",
      "toc_root": true,
      "_target": {
        "path": "/news/**"
      }
    },
    {
      "type": "docs",
      "_target": {
        "path": "/**"
      }
    }
  ]
}

Note the addition of toc_root here. Setting that to true for a section causes it to be treated as a separate part of the site, with its own left hand navigation menu.

An example docs-based site that uses this technique can be found at the mostly docs repo.

Page frontmatter

Each page file in a Hugo site has metadata frontmatter that tells Hugo about the page. You specify page frontmatter in TOML, YAML, or JSON (our example site and this site use YAML). Use the frontmatter to specify the page title, description, creation date, link title, template, menu weighting, and even any resources such as images used by the page. You can see a complete list of possible page frontmatter in Front Matter.

For example, here’s the frontmatter for this page:

+++
title = "Adding Content"
linkTitle = "Adding Content"
weight = 1
description = '''
Add different types of content to your Docsy site.
'''
+++
---
title: "Adding Content"
linkTitle: "Adding Content"
weight: 1
description: >
  Add different types of content to your Docsy site.  
---
{
  "title": "Adding Content",
  "linkTitle": "Adding Content",
  "weight": 1,
  "description": "Add different types of content to your Docsy site.\n"
}

The minimum frontmatter you need to provide is a title: everything else is up to you! However, if you leave out the page weight, your navigation may get a little disorganized. You may also want to include description since Docsy uses that to generate the meta description tag used by search engines. See Search Engine Optimization (SEO) meta tags for details.

Page contents and markup

By default you create pages in a Docsy site as simple Markdown or HTML files with page frontmatter, as described above. As of version 0.100, Goldmark is the only Markdown parser supported by Hugo.

In addition to your marked-up text, you can also use Hugo and Docsy’s shortcodes: reusable chunks of HTML that you can use to quickly build your pages. Find out more about shortcodes in Docsy Shortcodes.

Hugo lets you specify links using normal Markdown syntax, though remember that you need to specify links relative to your site’s root URL, and that relative URLs are left unchanged by Hugo in your site’s generated HTML.

Alternatively you can use Hugo’s helper ref and relref shortcodes for creating internal links that resolve to the correct URL. However, be aware this means your links will not appear as links at all if a user views your page outside your generated site, for example using the rendered Markdown feature in GitHub’s web UI.

You can find (or add!) tips and gotchas for working with Hugo links in Hugo Tips.

Content style

We don’t mandate any particular style for your page contents. However, if you’d like some guidance on how to write and format clear, concise technical documentation, we recommend the Google Developer Documentation Style Guide, particularly the Style Guide Highlights.

Page bundles

You can create site pages as standalone files in their section or subsection directory, or as folders where the content is in the folder’s index page. Creating a folder for your page lets you bundle images and other resources together with the content.

You can see examples of both approaches in this and our example site. For example, the source for this page is just a standalone file /content/en/docs/adding-content.md. However the source for Docsy Shortcodes in this site lives in /content/en/docs/adding-content/shortcodes/index.md, with the image resource used by the page in the same /shortcodes/ directory. In Hugo terminology, this is called a leaf bundle because it’s a folder containing all the data for a single site page without any child pages (and uses index.md without an underscore).

You can find out much more about managing resources with Hugo bundles in Page Bundles.

Adding docs and blog posts

The template you’ll probably use most often is the docs template (as used in this page) or the very similar blog template. Both these templates include:

  • a left nav
  • GitHub links (populated from your site config) for readers to edit the page or create issues
  • a page menu

as well as the common header and footer used by all your site’s pages. Which template is applied depends on whether you’ve added the content to the blog or docs content directory. You can find out more about how the nav and page menu are created in Navigation and Search.

Organizing your documentation

While Docsy’s top-level sections let you create site sections for different types of content, you may also want to organize your docs content within your docs section. For example, this site’s docs section directory has multiple subdirectories for Getting Started, Content and Customization, and so on. Each subdirectory has an _index.md (it could also be an _index.html), which acts as a section index page and tells Hugo that the relevant directory is a subsection of your docs.

Docsy’s docs layout gives you a left nav pane with an autogenerated nested menu based on your docs file structure. Each standalone page or subsection _index.md or _index.html page in the docs/ directory gets a top level menu item, using the link name and weight metadata from the page or index.

To add docs to a subsection, just add your page files to the relevant subdirectory. Any pages that you add to a subsection in addition to the subsection index page will appear in a submenu (look to the left to see one in action!), again ordered by page weight. Find out more about adding Docsy’s navigation metadata in Navigation and Search

If you’ve copied the example site, you’ll already have some suggested subdirectories in your docs directory, with guidance for what types of content to put in them and some example Markdown pages. You can find out more about organizing your content with Docsy in Organizing Your Content.

Docs section landing pages

By default a docs section landing page (the _index.md or _index.html in the section directory) uses a layout that adds a formatted list of links to the pages in the section, with their frontmatter descriptions. The Content and Customization landing page in this site is a good example.

To display a simple bulleted list of links to the section’s pages instead, specify simple_list: true in the landing page’s frontmatter:

+++
title = "Simple List Page"
simple_list = true
weight = 20
+++
---
title: "Simple List Page"
simple_list: true
weight: 20
---
{
  "title": "Simple List Page",
  "simple_list": true,
  "weight": 20
}

To display no links at all, specify no_list: true in the landing page’s frontmatter:

+++
title = "No List Page"
no_list = true
weight = 20
+++
---
title: "No List Page"
no_list: true
weight: 20
---
{
  "title": "No List Page",
  "no_list": true,
  "weight": 20
}

Organizing your blog posts

Docsy’s blog layout also gives you a left nav menu (like the docs layout), and a list-type index page for your blog that’s applied to /blog/_index.md and automatically displays snippets of all your recent posts in reverse chronological order.

To create different blog categories to organize your posts, create subfolders in blog/. For instance, in our example site we have news and releases. Each category needs to have its own _index.md or _index.html landing page file specifying the category title for it to appear properly in the left nav and top-level blog landing page. Here’s the index page for releases:

+++
title = "New Releases"
linkTitle = "Releases"
weight = 20
+++
---
title: "New Releases"
linkTitle: "Releases"
weight: 20
---
{
  "title": "New Releases",
  "linkTitle": "Releases",
  "weight": 20
}

To add author and date information to blog posts, add them to the page frontmatter:

+++
date = 2018-10-06T00:00:00.000Z
title = "Easy documentation with Docsy"
linkTitle = "Announcing Docsy"
description = "The Docsy Hugo theme lets project maintainers and contributors focus on content, not on reinventing a website infrastructure from scratch"
author = "Riona MacNamara"

[[resources]]
src = "**.{png,jpg}"
title = "Image #:counter"

  [resources.params]
  byline = "Photo: Riona MacNamara / CC-BY-CA"
+++
---
date: 2018-10-06
title: "Easy documentation with Docsy"
linkTitle: "Announcing Docsy"
description: "The Docsy Hugo theme lets project maintainers and contributors focus on content, not on reinventing a website infrastructure from scratch"
author: Riona MacNamara
resources:
  - src: "**.{png,jpg}"
    title: "Image #:counter"
    params:
    byline: "Photo: Riona MacNamara / CC-BY-CA"
---
{
  "date": "2018-10-06T00:00:00.000Z",
  "title": "Easy documentation with Docsy",
  "linkTitle": "Announcing Docsy",
  "description": "The Docsy Hugo theme lets project maintainers and contributors focus on content, not on reinventing a website infrastructure from scratch",
  "author": "Riona MacNamara",
  "resources": [
    {
      "src": "**.{png,jpg}",
      "title": "Image #:counter",
      "params": {
        "byline": "Photo: Riona MacNamara / CC-BY-CA"
      }
    }
  ]
}

If you’ve copied the example site and you don’t want a blog section, or want to link to an external blog instead, just delete the blog subdirectory.

Working with top-level landing pages.

Docsy’s default page template has no left nav and is useful for creating a home page for your site or other “landing” type pages.

Customizing the example site pages

If you’ve copied the example site, you already have a simple site landing page in content/en/_index.html. This is made up of Docsy’s provided Hugo shortcode page blocks.

To customize the large landing image, which is in a cover block, replace the content/en/featured-background.jpg file in your project with your own image (it can be called whatever you like as long as it has background in the file name). You can remove or add as many blocks as you like, as well as adding your own custom content.

The example site also has an About page in content/en/about/_index.html using the same Docsy template. Again, this is made up of page blocks, including another background image in content/en/about/featured-background.jpg. As with the site landing page, you can replace the image, remove or add blocks, or just add your own content.

Building your own landing pages

If you’ve just used the theme, you can still use all Docsy’s provided page blocks (or any other content you want) to build your own landing pages in the same file locations.

Adding a community page

The community landing page template has boilerplate content that’s automatically filled in with the project name and community links specified in hugo.toml/hugo.yaml/hugo.json, providing your users with quick links to resources that help them get involved in your project. The same links are also added by default to your site footer.

[params.links]
# End user relevant links. These will show up on left side of footer and in the community page if you have one.
[[params.links.user]]
	name = "User mailing list"
	url = "https://example.org/mail"
	icon = "fa fa-envelope"
        desc = "Discussion and help from your fellow users"
[[params.links.user]]
	name ="Twitter"
	url = "https://example.org/twitter"
	icon = "fab fa-x-twitter"
        desc = "Follow us on Twitter to get the latest news!"
[[params.links.user]]
	name = "Stack Overflow"
	url = "https://example.org/stack"
	icon = "fab fa-stack-overflow"
        desc = "Practical questions and curated answers"
# Developer relevant links. These will show up on right side of footer and in the community page if you have one.
[[params.links.developer]]
	name = "GitHub"
	url = "https://github.com/google/docsy"
	icon = "fab fa-github"
        desc = "Development takes place here!"
[[params.links.developer]]
	name = "Slack"
	url = "https://example.org/slack"
	icon = "fab fa-slack"
        desc = "Chat with other project developers"
[[params.links.developer]]
	name = "Developer mailing list"
	url = "https://example.org/mail"
	icon = "fa fa-envelope"
        desc = "Discuss development issues around the project"
params:
  links:
    user:
      - name: User mailing list
        url: 'https://example.org/mail'
        icon: fa fa-envelope
        desc: Discussion and help from your fellow users
      - name: Twitter
        url: 'https://example.org/twitter'
        icon: fab fa-x-twitter
        desc: Follow us on Twitter to get the latest news!
      - name: Stack Overflow
        url: 'https://example.org/stack'
        icon: fab fa-stack-overflow
        desc: Practical questions and curated answers
    developer:
      - name: GitHub
        url: 'https://github.com/google/docsy'
        icon: fab fa-github
        desc: Development takes place here!
      - name: Slack
        url: 'https://example.org/slack'
        icon: fab fa-slack
        desc: Chat with other project developers
      - name: Developer mailing list
        url: 'https://example.org/mail'
        icon: fa fa-envelope
        desc: Discuss development issues around the project
{
  "params": {
    "links": {
      "user": [
        {
          "name": "User mailing list",
          "url": "https://example.org/mail",
          "icon": "fa fa-envelope",
          "desc": "Discussion and help from your fellow users"
        },
        {
          "name": "Twitter",
          "url": "https://example.org/twitter",
          "icon": "fa-brands fa-x-twitter",
          "desc": "Follow us on Twitter to get the latest news!"
        },
        {
          "name": "Stack Overflow",
          "url": "https://example.org/stack",
          "icon": "fa-brands fa-stack-overflow",
          "desc": "Practical questions and curated answers"
        }
      ],
      "developer": [
        {
          "name": "GitHub",
          "url": "https://github.com/google/docsy",
          "icon": "fa-brands fa-github",
          "desc": "Development takes place here!"
        },
        {
          "name": "Slack",
          "url": "https://example.org/slack",
          "icon": "fa-brands fa-slack",
          "desc": "Chat with other project developers"
        },
        {
          "name": "Developer mailing list",
          "url": "https://example.org/mail",
          "icon": "fa fa-envelope",
          "desc": "Discuss development issues around the project"
        }
      ]
    }
  }
}

If you’re creating your own site and want to add a page using this template, add a /community/_index.md file in your content root directory. If you’ve copied the example site and don’t want a community page, just delete the /content/en/community/ directory in your project repo.

Adding static content

You may want to serve some non-Hugo-built content along with your site: for example, if you have generated reference docs using Doxygen, Javadoc, or other doc generation tools.

To add static content to be served “as-is”, just add the content as a folder and/or files in your site’s static directory. When your site is deployed, content in this directory is served at the site root path. So, for example, if you have added content at /static/reference/cpp/, users can access that content at http://{server-url}/reference/cpp/ and you can link to pages in this directory from other pages at /reference/cpp/{file name}.

You can also use this directory for other files used by your project, including image files. You can find out more about serving static files, including configuring multiple directories for static content, in Static Files.

RSS feeds

Hugo will, by default, create an RSS feed for the home page and any section. For the main RSS feed you can control which sections to include by setting a site param in your hugo.toml/hugo.yaml/hugo.json. This is the default configuration:

[params]
rss_sections = ["blog"]
params:
  rss_sections: [blog]
{
  "params": {
    "rss_sections": [
      "blog"
      ]
  }
}

To disable all RSS feeds, add the following to your hugo.toml/hugo.yaml/hugo.json:

[params]
disableKinds = ["RSS"]
params:
  disableKinds: [RSS]
{
  "params": {
    "disableKinds": [
      "RSS"
      ]
  }
}

Sitemap

Hugo creates a sitemap.xml file for your generated site by default: for example, here’s the sitemap for this site.

You can configure the frequency with which your sitemap is updated, your sitemap filename, and the default page priority in your hugo.toml/hugo.yaml/hugo.json:

[sitemap]
  changefreq = "monthly"
  filename = "sitemap.xml"
  priority = 0.5
sitemap:
  changefreq: monthly
  filename: sitemap.xml
  priority: 0.5
{
  "sitemap": {
    "changefreq": "monthly",
    "filename": "sitemap.xml",
    "priority": 0.5
  }
}

To override any of these values for a given page, specify it in page frontmatter:

+++
title = "Adding Content"
linkTitle = "Adding Content"
weight = 1
description = '''
Add different types of content to your Docsy site.
'''
[sitemap]
priority = 1
+++
---
title: "Adding Content"
linkTitle: "Adding Content"
weight: 1
description: >
  Add different types of content to your Docsy site.  
sitemap:
  priority: 1.0
---
{
  "title": "Adding Content",
  "linkTitle": "Adding Content",
  "weight": 1,
  "description": "Add different types of content to your Docsy site.\n",
  "sitemap": {
    "priority": 1
  }
}

To learn more about configuring sitemaps, see Sitemap Template.

2 - Look and Feel

Customize colors, fonts, code highlighting, and more for your site.

By default, a site using Docsy has the theme’s default fonts, colors, and general look and feel. However, if you want your own color scheme (and you probably will!) you can very easily override the theme defaults with your own project-specific values - Hugo will look in your project files first when looking for information to build your site. And because Docsy uses Bootstrap 5 and SCSS for styling, you can override just single values (such as project colors and fonts) in its special SCSS project variables file, or do more serious customization by creating your own styles.

Docsy also provides options for styling your code blocks, using either Chroma or Prism for highlighting.

Project style files

To customize your project’s look and feel, create your own version of either or both of the following Docsy placeholder files (note the _project.scss suffixes):

Site colors

To customize your site’s colors, add SCSS variable overrides to assets/scss/_variables_project.scss. For example, you can set the primary and secondary site colors as follows:

$primary: #390040;
$secondary: #A23B72;

The theme has features such as gradient backgrounds ($enable-gradients) and shadows ($enable-shadows) enabled by default. These can also be toggled in your project variables file by setting the variables to false.

Fonts

The theme uses Open Sans as its primary font. To disable Google Fonts and use a system font, set this SCSS variable in assets/scss/_variables_project.scss:

$td-enable-google-fonts: false;

To configure another Google Font:

$google_font_name: "Open Sans";
$google_font_family: "Open+Sans:300,300i,400,400i,700,700i";

Note that if you decide to go with a font with different weights (in the built-in configuration this is 300 (light), 400 (medium) and 700 (bold)), you also need to adjust the weight related variables, i.e. variables starting with $font-weight-.

CSS utilities

For documentation of available CSS utility classes, see the Bootstrap Documentation. This theme adds very little on its own in this area. However, we have added some color state CSS classes that can be useful in a dynamic context:

  • .-bg-<color>
  • .-text-<color>

You can use these classes, for example, to style your text in an appropriate color when you don’t know if the primary color is dark or light, to ensure proper color contrast. They are also useful when you receive the color code as a shortcode parameter.

The value of <color> can be any of the color names, primary, white, dark, warning, light, success, 300, blue, orange etc.

When you use .-bg-<color>, the text colors will be adjusted to get proper contrast:

<div class="-bg-primary p-3 display-4">Background: Primary</div>
<div class="-bg-200 p-3 display-4">Background: Gray 200</div>
Background: Primary
Background: Gray 200

.-text-<color> sets the text color only:

<div class="-text-blue pt-3 display-4">Text: Blue</div>
Text: Blue

Code highlighting with Chroma

With Hugo version 0.60 and higher, you can choose from a range of code block highlight and colour styles using Chroma that are applied to your fenced code blocks by default. If you copied a recent hugo.toml your site uses Tango (like this site), otherwise the Hugo default is Monokai. You can switch to any of the available Chroma styles (including our Docsy default Tango) using your hugo.toml/hugo.yaml/hugo.json:

[markup]
  [markup.goldmark]
    [markup.goldmark.renderer]
      unsafe = true
  [markup.highlight]
      # See a complete list of available styles at https://xyproto.github.io/splash/docs/all.html
      style = "tango"
markup:
  goldmark:
    renderer:
      unsafe: true
  highlight:
    style: tango
{
  "markup": {
    "goldmark": {
      "renderer": {
        "unsafe": true
      }
    },
    "highlight": {
      "style": "tango"
    }
  }
}

By default code highlighting styles are not applied to code blocks without a specified language, instead you get Docsy’s default style of grey with black text. If you would like the code highlighting style to apply to all code blocks, even without a language, uncomment or add the following line under [markup.highlight] in your hugo.toml/hugo.yaml/hugo.json.

# Uncomment if you want your chosen highlight style used for code blocks without a specified language
guessSyntax = true
guessSyntax: true
"guessSyntax": true

If you are using a Docsy version later than 0.6.0, the code blocks show a “Copy to clipboard” icon in the top right-hand corner. To disable this functionality set disable_click2copy_chroma to true in your configuration file:

You can find out more about code highlighting in Hugo with Chroma in Syntax Highlighting.

Code highlighting with Prism

Optionally, you can enable Prism syntax highlighting in your hugo.toml/hugo.yaml/hugo.json:

[params]
# Enable syntax highlighting and copy buttons on code blocks with Prism
prism_syntax_highlighting = true
params:
  prism_syntax_highlighting: true
{
  "params": {
    "prism_syntax_highlighting": true
  }
}

When this option is enabled your site uses Prism instead of Chroma for code block highlighting.

Prism is a popular open source syntax highlighter which supports over 200 languages and various plugins.

Docsy includes JavaScript and CSS files for a basic Prism configuration, which supports:

  • Code blocks styled with the Prism Default theme
  • Copy to clipboard buttons on code blocks
  • Syntax highlighting for a number of common languages, as specified in the following Prism download link, Customize your download.

Code blocks with no language

By default, Prism code highlighting styles are not applied to code blocks without a specified language, instead you get Docsy’s default style of grey with black text. To apply Prism styling to code blocks with no language or a language not supported by Prism, specify none as the language after your triple backticks.

Extending Prism for additional languages or plugins

If the included Prism configuration is not sufficient for your requirements, and you want to use additional languages or plugins you can replace the included files with your own.

  1. Download your own Prism JS and CSS files from https://prismjs.com/download.html
  2. Replace the included Prism JS and CSS with the files you downloaded:
    • Copy the Javascript file to static/js/prism.js
    • Copy the CSS file to static/css/prism.css

For pages containing a blocks/cover shortcode, like most homepages, the navbar is translucent as long as the hero image hasn’t scrolled up past the navbar. For an example, see the About Docsy page. This initial translucent setting ensures that the hero image is maximally visible.

After the hero image has scrolled past the navbar, the navbar’s (opaque) background color is set – usually to the site’s primary color.

The text of navbar entries can be difficult to read with some hero images. In these cases, you can disable navbar translucency by setting the params.ui.navbar_translucent_over_cover_disable option to true in your site’s configuration file.

Styling your project logo and name

The default Docsy navbar (.td-navbar) displays your site identity, consisting of the following:

  1. Your logo, which is included in the navbar as an inline SVG, styled by .td-navbar .navbar-brand svg. For the style details, see _nav.scss.

    To ensure your logo displays correctly, you may want to resize it and ensure that it doesn’t have height and width attributes so that its size is fully responsive. Override the default styling of .td-navbar .navbar-brand svg or (equivalently) .td-navbar .navbar-brand__logo as needed.

  2. Your project name, which is the site title. If you don’t want your project name to appear (for example, because your logo is or contains a wordmark), then add the following custom styling to your project’s styles:

    .td-navbar .navbar-brand__name {
      display: none;
    }
    

Tables

Docsy applies the following styles to all tables, through the class .td-table:

  • Bootstrap table styles:
    • .table
    • .table-striped
    • .table-responsive
  • display: block, which is necessary for tables to be responsive.

This styling configuration gives you responsive tables using Markdown only, without the need to wrap the table in a <div>. It does, however, mean that all your tables have display set to block. If you don’t want this, you can create your own custom styles for tables.

To render a table without Docsy styling, apply the .td-initial class to the table. From the resulting <table> style base, it is easier to apply your own custom styles (rather than trying to undo Docsy table styling), as is illustrated in the following example:

| Shape    | Number of sides |
| -------- | --------------- |
| Triangle | 3               |
| Square   | 4               |
{.td-initial .my-dark-table-style}

The example above uses Markdown attribute syntax, and might render like this:

ShapeNumber of sides
Triangle3
Square4

Customizing templates

Add code to head or before body end

If you need to add some code (CSS import, cookie consent, or similar) to the head section on every page, add the head-end.html partial to your project:

layouts/partials/hooks/head-end.html

And add the code you need in that file. Your partial code is automatically included just before the end of the theme partial head.html. The theme version of head-end.html is empty.

Similarly, if you want to add some code right before the body end, create your own version of the following file:

layouts/partials/hooks/body-end.html

Any code in this file is included automatically at the end of the theme partial scripts.html.

Both head.html and scripts.html are then used to build Docsy’s base page layout, which is used by all the other page templates:

<!doctype html>
<html lang="{{ .Site.Language.Lang }}" class="no-js">
  <head>
    {{ partial "head.html" . }}
  </head>
  <body class="td-{{ .Kind }}">
    <header>
      {{ partial "navbar.html" . }}
    </header>
    <div class="container-fluid td-default td-outer">
      <main role="main" class="td-main">
        {{ block "main" . }}{{ end }}
      </main>
      {{ partial "footer.html" . }}
    </div>
    {{ partialCached "scripts.html" . }}
  </body>
</html>

3 - Navigation and Menus

Customize site navigation for your Docsy site.

Docsy provides multiple built-in navigation features for your sites, including site menus, section menus, and page menus. This page shows you how they work and how to configure and customize them to meet your needs.

Top-level menu

The top level menu (the one that appears in the top navigation bar for the entire site) uses your site’s main menu. All Hugo sites have a main menu array of menu entries, accessible via the .Site.Menus site variable and populatable via page front matter or your site’s hugo.toml/hugo.yaml/hugo.json.

To add a page or section to this menu, add it to the site’s main menu in either hugo.toml/hugo.yaml/hugo.json or in the destination page’s front matter (in _index.md or _index.html for a section, as that’s the section landing page). For example, here’s how we added the Documentation section landing page to the main menu in this site:

+++
title = "Welcome to Docsy"
linkTitle = "Documentation"

[menu.main]
weight = 20
pre = "<i class='fa-solid fa-book'></i>"
+++
---
title: "Welcome to Docsy"
linkTitle: "Documentation"
menu:
  main:
    weight: 20
    pre: <i class='fa-solid fa-book'></i>
---
{
  "title": "Welcome to Docsy",
  "linkTitle": "Documentation",
  "menu": {
    "main": {
      "weight": 20,
      "pre": "<i class='fa-solid fa-book'></i>"
    }
  }
}

The menu is ordered from left to right by page weight. So, for example, a section index or page with weight: 30 would appear after the Documentation section in the menu, while one with weight: 10 would appear before it.

If you want to add a link to an external site to this menu, add it in hugo.toml/hugo.yaml/hugo.json, specifying the weight.

[[menu.main]]
    name = "GitHub"
    weight = 50
    url = "https://github.com/google/docsy/"
menu:
  main:
    - name: GitHub
      weight: 50
      url: 'https://github.com/google/docsy/'
{
  "menu": {
    "main": [
      {
        "name": "GitHub",
        "weight": 50,
        "url": "https://github.com/google/docsy/"
      }
    ]
  }
}

Adding icons to the top-level menu

As described in the Hugo docs, you can add icons to the top-level menu by using the pre and/or post parameter for main menu items defined in your site’s hugo.toml/hugo.yaml/hugo.json or via page front matter. For example, the following configuration adds the GitHub icon to the GitHub menu item, and a New! alert to indicate that this is a new addition to the menu.

[[menu.main]]
    name = "GitHub"
    weight = 50
    url = "https://github.com/google/docsy/"
    pre = "<i class='fa-brands fa-github'></i>"
    post = "<span class='alert'>New!</span>"
menu:
  main:
    - name: GitHub
      weight: 50
      url: 'https://github.com/google/docsy/'
      pre: <i class='fa-brands fa-github'></i>
      post: <span class='alert'>New!</span>
{
  "menu": {
    "main": [
      {
        "name": "GitHub",
        "weight": 50,
        "url": "https://github.com/google/docsy/",
        "pre": "<i class='fa-brands fa-github'></i>",
        "post": "<span class='alert'>New!</span>"
      }
    ]
  }
}

You can find a complete list of icons to use in the FontAwesome documentation. Docsy includes the free FontAwesome icons by default.

Adding a version drop-down

If you add some [params.versions] in hugo.toml, the Docsy theme adds a version selector drop down to the top-level menu.

You can find out more in the guide to versioning your docs.

Adding a language drop-down

If you configure more than one language in hugo.toml, the Docsy theme adds a language selector drop down to the top-level menu. Selecting a language takes the user to the translated version of the current page, or the home page for the given language.

You can find out more in Multi-language support.

Section menu

The section menu, as shown in the left side of the docs section, is automatically built from the content tree. Like the top-level menu, it is ordered by page or section index weight (or by page creation date if weight is not set), with the page or index’s Title, or linkTitle if different, as its link title in the menu. If a section subfolder has pages other than _index.md or _index.html, those pages will appear as a submenu, again ordered by weight. For example, here’s the metadata for this page showing its weight and title:

+++
title = "Navigation and Search"
linkTitle = "Navigation and Search"
date = 2017-01-05T00:00:00.000Z
weight = 3
description = '''
Customize site navigation and search for your Docsy site.
'''
+++
---
title: "Navigation and Search"
linkTitle: "Navigation and Search"
date: 2017-01-05
weight: 3
description: >
  Customize site navigation and search for your Docsy site.  
---
{
  "title": "Navigation and Search",
  "linkTitle": "Navigation and Search",
  "date": "2017-01-05T00:00:00.000Z",
  "weight": 3,
  "description": "Customize site navigation and search for your Docsy site.\n"
}

To hide a page or section from the left navigation menu, set toc_hide: true in the front matter.

To hide a page from the section summary on a docs section landing page, set hide_summary: true in the front matter. If you want to hide a page from both the TOC menu and the section summary list, you need to set both toc_hide and hide_summary to true in the front matter.

+++
title = "My Hidden Page"
weight = 99
toc_hide = true
hide_summary = true
description = '''
Page hidden from both the TOC menu and the section summary list.
'''
+++
---
title: "My Hidden Page"
weight: 99
toc_hide: true
hide_summary: true
description: >
  Page hidden from both the TOC menu and the section summary list.  
---
{
  "title": "My Hidden Page",
  "weight": 99,
  "toc_hide": true,
  "hide_summary": true,
  "description": "Page hidden from both the TOC menu and the section summary list.\n"
}

Section menu options

By default, the section menu shows the current section fully expanded all the way down. This may make the left nav too long and difficult to scan for bigger sites. Try setting site parameter ui.sidebar_menu_compact = true in hugo.toml.

With the compact menu (.ui.sidebar_menu_compact = true), only the current page’s ancestors, siblings and direct descendants are shown. You can use the optional parameter .ui.ul_show to set a desired menu depth to always be visible. For example, with .ui.ul_show = 1 the first menu level is always displayed.

As well as the completely expanded and compact menu options, you can also create a foldable menu by setting the site parameter ui.sidebar_menu_foldable = true in hugo.toml. The foldable menu lets users expand and collapse menu sections by toggling arrow icons beside the section parents in the menu.

On large sites (default: > 2000 pages) the section menu is not generated for each page, but cached for the whole section. The HTML classes for marking the active menu item (and menu path) are then set using JS. You can adjust the limit for activating the cached section menu with the optional parameter .ui.sidebar_cache_limit.

The tabbed pane below lists the menu section options you can define in your project [configuration file].

[params.ui]
sidebar_menu_compact = true
ul_show = 1
sidebar_menu_foldable = true
sidebar_cache_limit = 1000
params:
  ui:
    sidebar_menu_compact: true
    ul_show: 1
    sidebar_menu_foldable: true
    sidebar_cache_limit: 1000
{
  "params": {
    "ui": {
      "sidebar_menu_compact": true,
      "ul_show": 1,
      "sidebar_menu_foldable": true,
      "sidebar_cache_limit": 1000,
    }
  }
}

Add icons to the section menu

You can add icons to the section menu in the sidebar by setting the icon parameter in the page front matter (e.g. icon: fa-solid fa-screwdriver-wrench).

You can find a complete list of icons to use in the FontAwesome documentation. Docsy includes the free FontAwesome icons by default.

Out of the box, if you want to use icons, you should define icons for all items on the same menu level in order to ensure an appropriate look. If the icons are used in a different way, individual CSS adjustments are likely necessary.

By default the section menu is entirely generated from your section’s pages. If you want to add a manual link to this menu, such as a link to an external site or a page in a different section of your site, you can do this by creating a placeholder page file in the doc hierarchy with the appropriate weight and some special parameters in its metadata (frontmatter) to specify the link details.

To create a placeholder page, create a page file as usual in the directory where you want the link to show up in the menu, and add a manualLink parameter to its metadata. If a page has manualLink in its metadata, Docsy generates a link for it in the section menu for this page and in the section index (the list of the child pages of a section on a landing page - see description in the Docsy docs), but the link destination is replaced by the value of manualLink. The link text is the title (or linkTitle if set) of your placeholder page. You can optionally also set the title attribute of the link with the parameter manualLinkTitle and a link target with manualLinkTarget - for example if you want an external link to open in a new tab you can set the link target to _blank. Docsy automatically adds rel=noopener to links that open new tabs as a security best practice.

You can also use manualLink to add an additional cross reference to another existing page of your site. For internal links you can choose to use the parameter manualLinkRelref instead of manualLink to use the built-in Hugo function relref. If relref can’t find a unique page in your site, Hugo throws a error message.

Breadcrumb navigation links appear at the top of each page by default. To disable breadcrumb navigation, set site param ui.breadcrumb_disable = true in hugo.toml.

Breadcrumb navigation links are also shown for each item on the taxonomy results page (i.e. when you click one of the taxonomy labels, e.g. Tags/Categories). These breadcrumbs can be disabled in hugo.toml by setting site param ui.taxonomy_breadcrumb_disable = true.

The tabbed pane below lists the breadcrumb navigation options you can define in your project [configuration file].

[params.ui]
breadcrumb_disable = true
taxonomy_breadcrumb_disable = true
params:
  ui:
    breadcrumb_disable: true
    taxonomy_breadcrumb_disable: true
{
  "params": {
    "ui": {
      "breadcrumb_disable": true,
      "taxonomy_breadcrumb_disable": true
    }
  }
}

Docsy supports build-time generation of heading self links using Hugo’s render-heading.html hook.

To enable this feature in your project, define layouts/_default/_markup/render-heading.html as:

{{ template "_default/_markup/td-render-heading.html" . }}

The heading self-link anchor class is .td-heading-self-link, which you can customize for your project. By default, the heading self-link style has these defaults:

  • The self-link symbol is #.
  • The symbol is always visible on mobile and touch devices, otherwise it is only visible on hover or focus.

Your projects can also reuse (in your own custom heading render hook) or override the heading self-link template _default/_markup/_td-heading-self-link.html, which is defined in layouts/_default/_markup/td-render-heading.html.

4 - Search

Let users search your Docsy site with a choice of configurable search options.

Docsy offers multiple options that let your readers search your site content, so you can pick one that suits your needs. You can choose from:

  • Google Custom Search Engine (GCSE), the default option, which uses Google’s index of your public site to generate a search results page.
  • Algolia DocSearch, which uses Algolia’s indexing and search mechanism. Search results are displayed as a pop-up. Algolia DocSearch is free for public documentation sites.
  • Local search with Lunr, which uses Javascript to index and search your site without the need to connect to external services. This option doesn’t require your site to be public.

If you enable any of these search options in your project configuration file, a search box displays in the right of your top navigation bar. By default a search box also displays at the top of the section menu in the left navigation pane, which you can disable if you prefer, or if you’re using a search option that only works with the top search box.

By default, the search box appears in both the top navigation bar and at the top of the sidebar left navigation pane. If you don’t want the sidebar search box, set the site parameter sidebar_search_disable to true in hugo.toml/hugo.yaml/hugo.json:

[params.ui]
sidebar_search_disable = true
params:
  ui:
    sidebar_search_disable: true
{
  "params": {
    "ui": {
      "sidebar_search_disable": true
    }
  }
}

Configure search with a Google Custom Search Engine

By default Docsy uses a Google Custom Search Engine (GCSE) to search your site. To enable this feature, you’ll first need to make sure that you have built and deployed a production version of your site, as otherwise your site won’t be crawled and indexed.

  1. Create a Google Custom Search Engine for your deployed site by clicking New search engine on the Custom Search page and following the instructions. Make a note of the ID for your new search engine.

  2. Add any further configuration you want to your search engine using the Edit search engine options. In particular you may want to do the following:

    • Select Look and feel. Change from the default Overlay layout to Results only, as this option means your search results are embedded in your search page rather than appearing in a separate box. Click Save to save your changes.
    • Edit the default result link behavior so that search results from your site don’t open in a new tab. To do this, select Search Features - Advanced - Websearch Settings. In the Link Target field, type “_parent”. Click Save to save your changes.

Adding the search page

Once you have your search engine set up, you can add the feature to your site:

  1. Ensure you have a Markdown file in content/en/search.md (and one per other languages if needed) to display your search results. It only needs a title and layout: search, as in the following example:

    +++
    title = "Search Results"
    layout = "search"
    +++
    ---
    title: Search Results
    layout: search
    ---
    {
        "title": "Search Results",
        "layout": "search"
    }
  2. Add your Google Custom Search Engine ID to the site params in hugo.toml/hugo.yaml/hugo.json. You can add different values per language if needed.

    [params]
    # Google Custom Search Engine ID. Remove or comment out to disable search.
    gcs_engine_id = "011737558837375720776:fsdu1nryfng"
    params:
      gcs_engine_id: 011737558837375720776:fsdu1nryfng
    {
      "params": {
        "gcs_engine_id": "011737558837375720776:fsdu1nryfng"
      }
    }

If you don’t specify a Google Custom Search Engine ID for your project and haven’t enabled any other search options, the search box won’t appear in your site. If you’re using the default hugo.toml from the example site and want to disable search, just comment out or remove the relevant line.

Algolia DocSearch

As an alternative to GCSE, you can use Algolia DocSearch, which is free for public documentation sites. Docsy supports Algolia DocSearch v3.

Sign up for Algolia DocSearch

Complete the form at https://docsearch.algolia.com/apply. Proceed to the next step once you’ve received Algolia DocSearch parameters for your project.

Eager to test DocSearch?

Docsy defaults to the Algolia test-site parameters when none are provided. To enable search over the Algolia test, define params.search.algolia without any other fields, as outlined next.

Configure Algolia DocSearch

  1. Ensure that GCSE search is disabled.

  2. Add your project’s Algolia DocSearch parameters to hugo.toml/hugo.yaml/hugo.json, for example (using Algolia test values):

    [params.search.algolia]
    appId = "R2IYF7ETH7"
    apiKey = "599cec31baffa4868cae4e79f180729b"
    indexName = "docsearch"
    params:
      search:
        algolia:
          appId: R2IYF7ETH7
          apiKey: 599cec31baffa4868cae4e79f180729b
          indexName: docsearch
    {
      "params": {
        "search": {
          "algolia": {
            "appId": "R2IYF7ETH7",
            "apiKey": "599cec31baffa4868cae4e79f180729b",
            "indexName": "docsearch"
          }
        }
      }
    }

To learn more about Algolia DocSearch V3, see Getting started.

When you’ve completed these steps, Algolia search should be enabled on your site. Search results are displayed as a pop-up, so you don’t need to add any search results page.

Customizing Algolia templates

You can customize or disable Docsy’s default Algolia support by creating the following template files:

  • layouts/partials/algolia/head.html used by head.html to load Algolia DocSearch styles. It also issues a deprecation warning for params.algolia_docsearch.
  • layouts/partials/algolia/scripts.html used by scripts.html to load and configure Algolia DocSearch.

Leave either file empty to disable Docsy’s implementation.

Local search with Lunr

Lunr is a Javascript-based search option that lets you index your site and make it searchable without the need for external, server-side search services. This is a good option particularly for smaller or non-public sites.

To add Lunr search to your Docsy site:

  1. Enable local search in hugo.toml/hugo.yaml/hugo.json.

    [params]
    offlineSearch = true
    params:
      offlineSearch: true
    {
      "params": {
        "offlineSearch": true
      }
    }
  2. Remove or comment out any GCSE ID in hugo.toml/hugo.yaml/hugo.json and ensure Algolia DocSearch is set to false, as you can only have one type of search enabled. See Disabling GCSE search.

Once you’ve completed these steps, local search is enabled for your site and results appear in a drop down when you use the search box.

Changing the summary length of the local search results

You can customize the summary length by setting offlineSearchSummaryLength in hugo.toml/hugo.yaml/hugo.json.

#Enable offline search with Lunr.js
[params]
offlineSearch = true
offlineSearchSummaryLength = 200
params:
  offlineSearch: true
  offlineSearchSummaryLength: 200
{
  "params": {
    "offlineSearch": true,
    "offlineSearchSummaryLength": 200
  }
}

You can customize the maximum result count by setting offlineSearchMaxResults in hugo.toml/hugo.yaml/hugo.json.

[params]
offlineSearch = true
offlineSearchMaxResults = 25
params:
  offlineSearch: true
  offlineSearchMaxResults: 25
{
  "params": {
    "offlineSearch": true,
    "offlineSearchMaxResults": 25
  }
}

Changing the width of the local search results popover

The width of the search results popover will automatically widen according to the content.

If you want to limit the width, add the following scss into assets/scss/_variables_project.scss.

.td-offline-search-results {
  max-width: 460px;
}

Excluding pages from local search results

To exclude pages from local search results, add exclude_search: true to the the frontmatter of each page:

+++
title = "Index"
weight = 10
exclude_search = true
+++
---
title: "Index"
weight: 10
exclude_search: true
---
{
  "title": "Index",
  "weight": 10,
  "exclude_search": true
}

5 - Doc Versioning

Customize navigation and banners for multiple versions of your docs.

Depending on your project’s releases and versioning, you may want to let your users access previous versions of your documentation. How you deploy the previous versions is up to you. This page describes the Docsy features that you can use to provide navigation between the various versions of your docs and to display an information banner on the archived sites.

Adding a version drop-down menu

If you add some [params.versions] in hugo.toml/hugo.yaml/hugo.json, the Docsy theme adds a version selector drop down to the top-level menu. You specify a URL and a name for each version you would like to add to the menu, as in the following example:

# Add your release versions here
[[params.versions]]
  version = "master"
  url = "https://master.kubeflow.org"

[[params.versions]]
  version = "v0.2"
  url = "https://v0-2.kubeflow.org"

[[params.versions]]
  version = "v0.3"
  url = "https://v0-3.kubeflow.org"
params:
  versions:
    - version: master
      url: 'https://master.kubeflow.org'
    - version: v0.2
      url: 'https://v0-2.kubeflow.org'
    - version: v0.3
      url: 'https://v0-3.kubeflow.org'
{
  "params": {
    "versions": [
      {
        "version": "master",
        "url": "https://master.kubeflow.org"
      },
      {
        "version": "v0.2",
        "url": "https://v0-2.kubeflow.org"
      },
      {
        "version": "v0.3",
        "url": "https://v0-3.kubeflow.org"
      }
    ]
  }
}

Remember to add your current version so that users can navigate back!

The default title for the version drop-down menu is Releases. To change the title, change the site parameter version_menu in hugo.toml/hugo.yaml/hugo.json:

[params]
version_menu = "Releases"
params:
  version_menu: Releases
{
  "params": {
    "version_menu": "Releases"
  }
}

If you set the version_menu_pagelinks parameter to true, then links in the version drop-down menu point to the current page in the other version, instead of the main page. This can be useful if the document doesn’t change much between the different versions. Note that if the current page doesn’t exist in the other version, the link will be broken.

You can read more about Docsy menus in the guide to navigation and search.

Displaying a banner on archived doc sites

If you create archived snapshots for older versions of your docs, you can add a note at the top of every page in the archived docs to let readers know that they’re seeing an unmaintained snapshot and give them a link to the latest version.

For example, see the archived docs for Kubeflow v0.6:

A text box explaining that this is an unmaintained snapshot of the docs.
Figure 1. The banner on the archived docs for Kubeflow v0.6

To add the banner to your doc site, make the following changes in your hugo.toml/hugo.yaml/hugo.json file:

  1. Set the site parameter archived_version to true:

    [params]
    archived_version = true
    params:
      archived_version: true
    {
      "params": {
        "archived_version": true
      }
    }
  2. Set the site parameter version to the version of the archived doc set. For example, if the archived docs are for version 0.1:

    [params]
    version = "0.1"
    params:
      version: 0.1
    {
      "params": {
        "version": "0.1"
      }
    }
  3. Make sure that site parameter url_latest_version contains the URL of the website that you want to point readers to. In most cases, this should be the URL of the latest version of your docs:

    [params]
    url_latest_version = "https://your-latest-doc-site.com"
    params:
      url_latest_version: https://your-latest-doc-site.com
    {
      "params": {
        "url_latest_version": "https://your-latest-doc-site.com"
      }
    }

6 - Docsy Shortcodes

Use Docsy’s Hugo shortcodes to quickly build site pages.

Rather than writing all your site pages from scratch, Hugo lets you define and use shortcodes. These are reusable snippets of content that you can include in your pages, often using HTML to create effects that are difficult or impossible to do in simple Markdown. Shortcodes can also have parameters that let you, for example, add your own text to a fancy shortcode text box. As well as Hugo’s built-in shortcodes, Docsy provides some shortcodes of its own to help you build your pages.

Shortcode delimiters

As illustrated below, using the bracket styled shortcode delimiter, {{<...>}}, tells Hugo that the inner content is HTML/plain text and needs no further processing. By using the delimiter {{%...%}}, Hugo will treat the shortcode body as Markdown. You can use both styles in your pages.

Shortcode blocks

The theme comes with a set of custom Page Block shortcodes that can be used to compose landing pages, about pages, and similar.

These blocks share some common parameters:

height
A pre-defined height of the block container. One of min, med, max, full, or auto. Setting it to full will fill the Viewport Height, which can be useful for landing pages.
color
The block will be assigned a color from the theme palette if not provided, but you can set your own if needed. You can use all of Bootstrap’s color names, theme color names or a grayscale shade. Some examples would be primary, white, dark, warning, light, success, 300, blue, orange. This will become the background color of the block, but text colors will adapt to get proper contrast.

blocks/cover

The blocks/cover shortcode creates a landing page type of block that fills the top of the page.

{{< blocks/cover title="Welcome!" image_anchor="center" height="full" color="primary" >}}
<div class="mx-auto">
	<a class="btn btn-lg btn-primary me-3 mb-4" href="{{< relref "/docs" >}}">
		Learn More <i class="fa-solid fa-circle-right ms-2"></i>
	</a>
	<a class="btn btn-lg btn-secondary me-3 mb-4" href="https://example.org">
		Download <i class="fa-brands fa-github ms-2"></i>
	</a>
	<p class="lead mt-5">This program is now available in <a href="#">AppStore!</a></p>
	<div class="mx-auto mt-5">
		{{< blocks/link-down color="info" >}}
	</div>
</div>
{{< /blocks/cover >}}

Note that the relevant shortcode parameters above will have sensible defaults, but is included here for completeness.

ParameterDefaultDescription
titleThe main display title for the block.
image_anchor
heightSee above.
colorSee above.
bylineByline text on featured image.

To set the background image, place an image with the word “background” in the name in the page’s Page Bundle. For example, in our the example site the background image in the home page’s cover block is featured-background.jpg, in the same directory.

For available icons, see Font Awesome.

blocks/lead

The blocks/lead block shortcode is a simple lead/title block with centred text and an arrow down pointing to the next section.

{{% blocks/lead color="dark" %}}
TechOS is the OS of the future.

Runs on **bare metal** in the **cloud**!
{{% /blocks/lead %}}
ParameterDefaultDescription
heightautoSee Shortcode blocks
color.OrdinalSee Shortcode blocks

blocks/section

The blocks/section shortcode is meant as a general-purpose content container. It comes in two “flavors”, one for general content and one with styling more suitable for wrapping a horizontal row of feature sections.

The example below shows a section wrapping 3 feature sections.

{{< blocks/section color="dark" type="row" >}}
{{% blocks/feature icon="fa-lightbulb" title="Fastest OS **on the planet**!" %}}
The new **TechOS** operating system is an open source project. It is a new project, but with grand ambitions.
Please follow this space for updates!
{{% /blocks/feature %}}
{{% blocks/feature icon="fa-brands fa-github" title="Contributions welcome!" url="https://github.com/gohugoio/hugo" %}}
We do a [Pull Request](https://github.com/gohugoio/hugo/pulls) contributions workflow on **GitHub**. New users are always welcome!
{{% /blocks/feature %}}
{{% blocks/feature icon="fa-brands fa-x-twitter" title="Follow us on Twitter!" url="https://twitter.com/GoHugoIO" %}}
For announcement of latest features etc.
{{% /blocks/feature %}}
{{< /blocks/section >}}
ParameterDefaultDescription
heightSee above.
colorSee above.
typeSpecify “container” (the default) if you want a general container, or “row” if the section will contain columns – which must be immediate children.

blocks/feature

{{% blocks/feature icon="fa-brands fa-github" title="Contributions welcome!" url="https://github.com/gohugoio/hugo" %}}
We do a [Pull Request](https://github.com/gohugoio/hugo/pulls) contributions workflow on **GitHub**. New users are always welcome!
{{% /blocks/feature %}}
ParameterDefaultDescription
titleThe title to use.
urlThe URL to link to.
url_textThe language parameter value of ui_read_moreThe link text to use.
iconThe icon class to use.

The blocks/link-down shortcode creates a navigation link down to the next section. It’s meant to be used in combination with the other blocks shortcodes.

<div class="mx-auto mt-5">
	{{< blocks/link-down color="info" >}}
</div>
ParameterDefaultDescription
colorinfoSee above.

Shortcode helpers

alert

The alert shortcode creates an alert block that can be used to display notices or warnings.

{{% alert title="Warning" color="warning" %}}
This is a warning.
{{% /alert %}}

Renders to:

ParameterDefaultDescription
colorprimaryOne of the theme colors, eg primary, info, warning etc.

pageinfo

The pageinfo shortcode creates a text box that you can use to add banner information for a page: for example, letting users know that the page contains placeholder content, that the content is deprecated, or that it documents a beta feature.

{{% pageinfo color="primary" %}}
This is placeholder content.
{{% /pageinfo %}}

Renders to:

This is placeholder content

ParameterDefaultDescription
colorprimaryOne of the theme colors, eg primary, info, warning etc.

imgproc

The imgproc shortcode finds an image in the current Page Bundle and scales it given a set of processing instructions.

{{% imgproc spruce Fill "400x450" %}}
Norway Spruce *Picea abies* shoot with foliage buds.
{{% /imgproc %}}

Use the syntax above if the inner content and/or the byline parameter of your shortcode is authored in markdown. In case of HTML content, use <> as innermost delimiters: {{< imgproc >}}<b>HTML</b> content{{< /imgproc >}}.

Norway Spruce Picea abies shoot with foliage buds.
Photo: Bjørn Erik Pedersen / CC-BY-SA

The example above has also a byline with photo attribution added. When using illustrations with a free license from WikiMedia and similar, you will in most situations need a way to attribute the author or licensor. You can add metadata to your page resources in the page front matter. The byline param is used by convention in this theme:

+++
[[resources]]
src = "**spruce*.jpg"

  [resources.params]
  byline = "*Photo*: Bjørn Erik Pedersen / CC-BY-SA"
+++
---
resources:
- src: "**spruce*.jpg"
  params:
    byline: "*Photo*: Bjørn Erik Pedersen / CC-BY-SA"
---
{
  "resources": [
    {
      "src": "**spruce*.jpg",
      "params": {
        "byline": "*Photo*: Bjørn Erik Pedersen / CC-BY-SA"
      }
    }
  ]
}
ParameterDescription
1The image filename or enough of it to identify it (we do Glob matching)
2Command. One of Fit, Resize, Fill or Crop. See Image Processing Methods.
3Processing options, e.g. 400x450 r180. See Image Processing Options.

swaggerui

You can place the swaggerui shortcode anywhere inside a page with the swagger layout; it renders Swagger UI using any OpenAPI YAML or JSON file as source. This file can be hosted anywhere you like, for example in your site’s root /static folder.

+++
title = "Pet Store API"
type = "swagger"
weight = 1
description = "Reference for the Pet Store API"
+++

{{< swaggerui src="/openapi/petstore.yaml" >}}
---
title: "Pet Store API"
type: swagger
weight: 1
description: Reference for the Pet Store API
---

{{< swaggerui src="/openapi/petstore.yaml" >}}
{
  "title": "Pet Store API",
  "type": "swagger",
  "weight": 1,
  "description": "Reference for the Pet Store API"
}

{{< swaggerui src="/openapi/petstore.yaml" >}}

You can customize Swagger UI’s look and feel by overriding Swagger’s CSS in themes/docsy/assets/scss/_swagger.scss.

redoc

The redoc shortcode uses the open-source Redoc tool to render reference API documentation from an OpenAPI YAML or JSON file. This can be hosted anywhere you like, for example in your site’s root /static folder, but you can use a URL as well, for example:

---
title: "Pet Store API"
type: docs
weight: 1
description: Reference for the Pet Store API
---

{{< redoc "https://raw.githubusercontent.com/OAI/OpenAPI-Specification/main/examples/v2.0/yaml/petstore.yaml" >}}

iframe

With this shortcode you can embed external content into a Docsy page as an inline frame (iframe) - see: https://www.w3schools.com/tags/tag_iframe.asp

ParameterDefaultDescription
srcURL of external content
width100%Width of iframe
tryautoheighttrueIf true the shortcode tries to calculate the needed height for the embedded content using JavaScript, as described here: https://stackoverflow.com/a/14618068. This is only possible if the embedded content is on the same domain. Note that even if the embedded content is on the same domain, it depends on the structure of the content if the height can be calculated correctly.
stylemin-height:98vh; border:none;CSS styles for the iframe. min-height:98vh; is a backup if tryautoheight doesn’t work. border:none; removes the border from the iframe - this is useful if you want the embedded content to look more like internal content from your page.
sandboxfalseYou can switch the sandbox completely on by setting sandbox = true or allow specific functionality with the common values for the iframe parameter sandbox defined in the HTML standard.
nameiframe-nameSpecify the name of the iframe.
idiframe-idSets the ID of the iframe.
classOptional parameter to set the classes of the iframe.
subYour browser cannot display embedded frames. You can access the embedded page via the following link:The text displayed (in addition to the embedded URL) if the user’s browser can’t display embedded frames.

Tabbed panes

Sometimes it’s very useful to have tabbed panes when authoring content. One common use-case is to show multiple syntax highlighted code blocks that showcase the same problem, and how to solve it in different programming languages. As an example, the tabbed pane below shows the language-specific variants of the famous Hello world! program one usually writes first when learning a new programming language:

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
  puts("Hello World!");
  return EXIT_SUCCESS;
}
#include <iostream>

int main()
{
  std::cout << "Hello World!" << std::endl;
}
package main
import "fmt"
func main() {
  fmt.Printf("Hello World!\n")
}
class HelloWorld {
  static public void main( String args[] ) {
    System.out.println( "Hello World!" );
  }
}
fun main(args : Array<String>) {
    println("Hello, world!")
}
print "Hello world"
<?php
echo 'Hello World!';
?>
print("Hello World!")
puts "Hello World!"
object HelloWorld extends App {
  println("Hello world!")
}

The Docsy template provides two shortcodes tabpane and tab that let you easily create tabbed panes. To see how to use them, have a look at the following code block, which renders to a right aligned pane with one disabled and three active tabs:

{{< tabpane text=true right=true >}}
  {{% tab header="**Languages**:" disabled=true /%}}
  {{% tab header="English" lang="en" %}}
  ![Flag United Kingdom](flags/uk.png)
  Welcome!
  {{% /tab %}}
  {{< tab header="German" lang="de" >}}
    <b>Herzlich willkommen!</b>
    <img src="flags/de.png" alt="Flag Germany" style="float: right; padding: 0 0 0 0px">
  {{< /tab >}}
  {{% tab header="Swahili" lang="sw" %}}
  ![Flag Tanzania](flags/tz.png)
  **Karibu sana!**
  {{% /tab %}}
{{< /tabpane >}}

This code translates to the right aligned tabbed pane below, showing a Welcome! greeting in English, German or Swahili:

Flag United Kingdom Welcome!

Herzlich willkommen! Flag Germany

Flag Tanzania Karibu sana!

Shortcode details

Tabbed panes are implemented using two shortcodes: tabpane containing two or more nested tabs.

tabpane

The tabpane shortcode, which is the container element for the tabs, supports the following named parameters, all of which are optional:

  • lang: the default code-block language to use for all contained tabs
  • highlight: parameter passed on to the code-block highlight function, as described below
  • langEqualsHeader: set to true when header text matches the tab language.
  • persist: one of header, lang, or disabled
  • persistLang: deprecated, use persist instead
  • right: set to true if you want right-aligned tabs
  • text: set to true if the content of all contained tabs are text. Default is false and assumes the content is code.

The value of the optional parameters lang and highlight are passed on as second LANG and third OPTIONS arguments to Hugo’s built-in highlight function, which is used to render the code blocks of the individual tabs.

Tab selection is persisted by default. When unspecified, persist defaults to header when text=true or lang is set; otherwise persist defaults to lang. To disable tab persistence, set persist=disable.

tab

The tab shortcode represent the tabs you want to show. It supports the following named parameters, all of which are optional:

  • header: defines the tab’s header text. When omitted it defaults to text of the form “Tab n”. You can omit the parameter name if it is the only tab parameter:
    {{< tab "My tab header" >}} … {{< /tab >}}
    
  • lang: code-block language for code tabs
  • highlight: parameter passed on to the code-block highlight function
  • right: set to true in order to split tab panes into a left aligned and a right aligned tab groups. Specify right=true in the dividing tab. By using right=true more than once, you can even render multiple tab groups.
  • disabled: set to true to disable a tab.
  • text: set to true for text tabs. By default tabs are assumed to contain code.

For enabled tabs, there are two modes for content display, code representation and textual representation:

  • By default, the tab’s content is rendered as a code block. In order to get proper syntax highlighting, specify the named parameter lang –and optionally the parameter highlight– for each tab. Parameters set in the parent tabpane shortcode will be overwritten.
  • If the contents of your tabs should be rendered as text with different styles and optional images, specify text=true as parameter of your tab:

Reminder: If your content is markdown, use the percent sign % as delimiter for your tab shortcode, like this:

{{% tab %}} Your \*\*markdown\*\* content {{% /tab %}}

Card panes

When authoring content, it’s sometimes very useful to put similar text blocks or code fragments on card like elements, which can be optionally presented side by side. Let’s showcase this feature with the following sample card group which shows the first four Presidents of the United States:

George Washington
*1732     †1799
President: 1789 – 1797

PortraitGeorgeWashington

John Adams
* 1735     † 1826
President: 1797 – 1801

PortraitJohnAdams

Thomas Jefferson
* 1743     † 1826
President: 1801 – 1809

PortraitThomasJefferson

James Madison
* 1751     † 1836
President: 1809 – 1817

PortraitJamesMadison

Docsy supports creating such card panes via different shortcodes:

  • The cardpane shortcode which is the container element for the various cards to be presented.
  • The card shortcodes, with each shortcode representing an individual card. While cards are often presented inside a card group, a single card may stand on its own, too. A card shortcode can hold programming code, text, images or any other arbitrary kind of markdown or HTML markup as content. In case of programming code, cards provide automatic code-highlighting and other optional features like line numbers, highlighting of certain lines, ….

Shortcode card: textual content

Make use of the card shortcode to display a card. The following code sample demonstrates how to code a card element:

{{< card header="**Imagine**" title="Artist and songwriter: John Lennon" subtitle="Co-writer: Yoko Ono"
          footer="![SignatureJohnLennon](https://server.tld/…/signature.png 'Signature John Lennon')">}}
Imagine there's no heaven, It's easy if you try<br/>
No hell below us, above us only sky<br/>
Imagine all the people living for today…

{{< /card >}}

This code translates to the left card shown below, showing the lyrics of John Lennon’s famous song Imagine. A second explanatory card element to the right indicates and explains the individual components of a card:

Imagine
Artist and songwriter: John Lennon
Co-writer: Yoko Ono

Imagine there’s no heaven, It’s easy if you try
No hell below us, above us only sky
Imagine all the people living for today…

Imagine there’s no countries, it isn’t hard to do
Nothing to kill or die for, and no religion too
Imagine all the people living life in peace…

Imagine no possessions, I wonder if you can
No need for greed or hunger - a brotherhood of man
Imagine all the people sharing all the world…

You may say I’m a dreamer, but I’m not the only one
I hope someday you’ll join us and the world will live as one

Header: specified via named parameter Header
Card title: specified via named parameter title
Card subtitle: specified via named parameter subtitle

Content: inner content of the shortcode, this may be plain text or formatted text, images, videos, … . If your content is markdown, use the percent sign % as outermost delimiter of your card shortcode, your markup should look like {{% card %}}Your **markdown** content{{% /card %}}. In case of HTML content, use square brackets <> as outermost delimiters: {{< card >}}Your <b>HTML</b> content{{< /card >}}

While the main content of the card is taken from the inner markup of the card shortcode, the optional elements footer, header, title, and subtitle are all specified as named parameters of the shortcode.

Shortcode card: programming code

If you want to display programming code on your card, set the named parameter code of the card to true. The following sample demonstrates how to code a card element with the famous Hello world! application coded in C:

{{< card code=true header="**C**" lang="C" >}}
#include <stdio.h>
#include <stdlib.h>

int main(void)
{
  puts("Hello World!");
  return EXIT_SUCCESS;
}
{{< /card >}}

This code translates to the card shown below:

C

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
  puts("Hello World!");
  return EXIT_SUCCESS;
}


If called with parameter code=true, the card shortcode can optionally hold the named parameters lang and/or highlight. The values of these optional parameters are passed on as second LANG and third OPTIONS arguments to Hugo’s built-in highlight function which is used to render the code block presented on the card.

Card groups

Displaying two ore more cards side by side can be easily achieved by putting them between the opening and closing elements of a cardpane shortcode. The general markup of a card group resembles closely the markup of a tabbed pane:

{{< cardpane >}}
  {{< card header="Header card 1" >}}
    Content card 1
  {{< /card >}}
  {{< card header="Header card 2" >}}
    Content card 2
  {{< /card >}}
  {{< card header="Header card 3" >}}
    Content card 3
  {{< /card >}}
{{< /cardpane >}}

Contrary to tabs, cards are presented side by side, however. This is especially useful it you want to compare different programming techniques (traditional vs. modern) on two cards, like demonstrated in the example above:

Java 5

File[] hiddenFiles = new File("directory_name")
  .listFiles(new FileFilter() {
    public boolean accept(File file) {
      return file.isHidden();
    }
  });
Java 8, Lambda expression

File[] hiddenFiles = new File("directory_name")
  .listFiles(File::isHidden);

Include external files

Sometimes there’s content that is relevant for several documents, or that is maintained in a file that is not necessarily a document. For situations like these, the readfile shortcode allows you to import the contents of an external file into a document.

Reuse documentation

In case you want to reuse some content in several documents, you can write said content in a separate file and include it wherever you need it.

For example, suppose you have a file called installation.md with the following contents:

## Installation

{{% alert title="Note" color="primary" %}}
Check system compatibility before proceeding.
{{% /alert %}}

1.  Download the installation files.

1.  Run the installation script

    `sudo sh install.sh`

1.  Test that your installation was successfully completed.

You can import this section into another document:

The following section explains how to install the database:

{{% readfile "installation.md" %}}

This is rendered as if the instructions were in the parent document. Hugo v0.101.0+ is required for imported files containing shortcodes to be rendered correctly.


The following section explains how to install the database:

Installation

  1. Download the installation files.

  2. Run the installation script

    sudo sh install.sh

  3. Test that your installation was successfully completed.


The parameter is the relative path to the file. Only relative paths under the parent file’s working directory are supported.

For files outside the current working directory you can use an absolute path starting with /. The root directory is the /content folder.

Include code files

Suppose you have an includes folder containing several code samples you want to use as part of your documentation. You can use readfile with some additional parameters:

To create a new pipeline, follow the next steps:

1.  Create a configuration file `config.yaml`:

    {{< readfile file="includes/config.yaml" code="true" lang="yaml" >}}

1.  Apply the file to your cluster `kubectl apply config.yaml`

This code automatically reads the content of includes/config.yaml and inserts it into the document. The rendered text looks like this:


To create a new pipeline, follow the next steps:

  1. Create a configuration file config.yaml:

    apiVersion: tekton.dev/v1beta1
        kind: Task
        metadata:
          name: hello
        spec:
          steps:
            - name: echo
              image: alpine
              script: |
                #!/bin/sh
                echo "Hello World"          
        
  2. Apply the file to your cluster kubectl apply config.yaml


The file parameter is the relative path to the file. Only relative paths under the parent file’s working directory are supported.

For files outside the current working directory you can use an absolute path starting with /. The root directory is the /content folder.

ParameterDefaultDescription
filePath of external file
codefalseBoolean value. If true the contents is treated as code
langplain textProgramming language

Error reporting

If the shortcode can’t find the specified file, the shortcode throws a compile error.

In the following example, Hugo throws a compile error if it can’t find includes/deploy.yml:

{{< readfile file="includes/deploy.yaml" code="true" lang="yaml" >}}

Alternately, Hugo you can display a message on the rendered page instead of throwing a compile error. Add draft="true" as a parameter. For example:

{{< readfile file="includes/deploy.yaml" code="true" lang="yaml" draft="true" >}}

Conditional text

The conditional-text shortcode allows you to show or hide parts of your content depending on the value of the buildCondition parameter set in your configuration file. This can be useful if you are generating different builds from the same source, for example, using a different product name. This shortcode helps you handle the minor differences between these builds.

{{% conditional-text include-if="foo" %}}
This text appears in the output only if `buildCondition = "foo" is set in your config file`.
{{% /conditional-text %}}
{{% conditional-text exclude-if="bar" %}}
This text does not appear in the output if `buildCondition = "bar" is set in your config file`.
{{% /conditional-text %}}

If you are using this shortcode, note that when evaluating the conditions, substring matches are matches as well. That means, if you set include-if="foobar", and buildcondition = "foo", you have a match!

7 - Logos and Images

Add and customize logos, icons, and images in your project.

By default, Docsy shows a site logo at the start of the navbar, that is, at the extreme left. Place your project’s SVG logo in assets/icons/logo.svg. This overrides the default Docsy logo in the theme.

If you don’t want a logo to appear in the navbar, then set site parameter navbar_logo to false in your project’s config:

[params.ui]
navbar_logo = false
params:
  ui:
    navbar_logo: false
{
  "params": {
    "ui": {
      "navbar_logo": false
    }
  }
}

For information about styling your logo, see Styling your project logo and name.

Use icons

Docsy includes the free FontAwesome icons by default, including logos for sites like GitHub and Stack Overflow. You can view all available icons in the FontAwesome documentation, including the FontAwesome version when the icon was added and whether it is available for free tier users. Check Docsy’s package.json and release notes for Docsy’s currently included version of FontAwesome.

You can add FontAwesome icons to your top-level menu, section menu, or anywhere in your text.

Add your favicons

The easiest way to do this is to create a set of favicons via http://cthedot.de/icongen (which lets you create a huge range of icon sizes and options from a single image) and/or https://favicon.io, and put them in your site project’s static/favicons directory. This will override the default favicons from the theme.

Note that https://favicon.io doesn’t create as wide a range of sizes as Icongen but does let you quickly create favicons from text: if you want to create text favicons you can use this site to generate them, then use Icongen to create more sizes (if necessary) from your generated .png file.

If you have special favicon requirements, you can create your own layouts/partials/favicons.html with your links.

Add images

Landing pages

Docsy’s blocks/cover shortcode make it easy to add large cover images to your landing pages. The shortcode looks for an image with the word “background” in the name inside the landing page’s Page Bundle - so, for example, if you’ve copied the example site, the landing page image in content/en/_index.html is content/en/featured-background.jpg.

You specify the preferred display height of a cover block container (and hence its image) using the block’s height parameter. For a full viewport height, use full:

{{< blocks/cover title="Welcome to the Docsy Example Project!" image_anchor="top" height="full" >}}
...
{{< /blocks/cover >}}

For a shorter image, as in the example site’s About page, use one of min, med, max or auto (the actual height of the image):

{{< blocks/cover title="About the Docsy Example" image_anchor="bottom" height="min" >}}
...
{{< /blocks/cover >}}

Other pages

To add inline images to other pages, use the imgproc shortcode. Alternatively, if you prefer, just use regular Markdown or HTML images and add your image files to your project’s static directory. You can find out more about using this directory in Adding static content.

Images used on this site

Images used as background images in this site are in the public domain and can be used freely. The porridge image in the example site is by iha31 from Pixabay.

8 - Print Support

Making it easier to print entire sections of documentation.

Individual documentation pages print well from most browsers as the layouts have been styled to omit navigational chrome from the printed output.

On some sites, it can be useful to enable a “print entire section” feature (as seen in this user guide). Selecting this option renders the entire current top-level section (such as Content and Customization for this page) with all of its child pages and sections in a format suited to printing, complete with a table of contents for the section.

To enable this feature, add the “print” output format in your site’s hugo.toml/hugo.yaml/hugo.json file for the “section” type:

[outputs]
section = [ "HTML", "RSS", "print" ]
outputs:
  section:
    - HTML
    - RSS
    - print
{
  "outputs": {
    "section": [
      "HTML",
      "RSS",
      "print"
    ]
  }
}

The site should then show a “Print entire section” link in the right hand navigation.

Further Customization

Disabling the ToC

To disable showing the the table of contents in the printable view, set the disable_toc param to true, either in the page front matter, or in hugo.toml/hugo.yaml/hugo.json:

+++

disable_toc = true

+++
---

disable_toc: true

---
{
  …,
  "disable_toc": true,
  
}
[params.print]
disable_toc = true
params:
  print:
    disable_toc: true
{
  "params": {
    "print": {
      "disable_toc": true
    }
  }
}

Layout hooks

A number of layout partials and hooks are defined that can be used to customize the printed format. These can be found in layouts/partials/print.

Hooks can be defined on a per-type basis. For example, you may want to customize the layouts of heading for “blog” pages vs “docs”. This can be achieved by creating layouts/partials/print/page-heading-<type>.html - eg. page-heading-blog.html. It defaults to using the page title and description as a heading.

Similarly, the formatting for each page can be customized by creating layouts/partials/print/content-<type>.html.

9 - Analytics, User Feedback, and SEO

Add Google Analytics tracking to your site, collect user feedback and learn about the page description meta tag.

Adding Analytics

The Docsy theme builds upon Hugo’s support for Google Analytics, which Hugo provides through internal templates. Once you set up analytics as described below, usage information for your site (such as page views) is sent to your Google Analytics account.

Prerequisites

You will need an analytics ID for your website before proceeding (technically it’s called a measurement ID or property ID but we’ll use the term “analytics ID” in this guide). If you don’t have one, see the How to get started section of Introducing Google Analytics 4 (GA4).

Setup

Enable Google Analytics by adding your project’s analytics ID to the site configuration file. For details, see Configure Google Analytics.

By default, Docsy uses the gtag.js analytics library for both GA4 (which requires gtag.js) and Universal Analytics (UA) site tags. If you prefer using the older analytics.js library for your UA site tag, then set params.disableGtagForUniversalAnalytics to true in your project’s configuration file.

[params]
disableGtagForUniversalAnalytics = true
params:
  disableGtagForUniversalAnalytics: true
{
  "params": {
    "disableGtagForUniversalAnalytics": true
  }
}

User Feedback

By default Docsy puts a “was this page helpful?” feedback widget at the bottom of every documentation page, as shown in Figure 1.

The user is presented with the text 'Was this page helpful?' followed
            by 'Yes' and 'No' buttons.
Figure 1. The feedback widget, outlined in red

After clicking Yes the user should see a response like Figure 2. You can configure the response text in your project’s configuration file.

After clicking 'Yes' the widget responds with 'Glad to hear it!
            Please tell us how we can improve.' and the second sentence is a link which,
            when clicked, opens GitHub and lets the user create an issue on the
            documentation repository.
Figure 2. An example Yes response

How is this data useful?

When you have a lot of documentation, and not enough time to update it all, you can use the “was this page helpful?” feedback data to help you decide which pages to prioritize. In general, start with the pages with a lot of pageviews and low ratings. “Low ratings” in this context means the pages where users are clicking No — the page wasn’t helpful — more often than Yes — the page was helpful. You can also study your highly-rated pages to develop hypotheses around why your users find them helpful.

In general, you can develop more certainty around what patterns your users find helpful or unhelpful if you introduce isolated changes in your documentation whenever possible. For example, suppose that you find a tutorial that no longer matches the product. You update the instructions, check back in a month, and the score has improved. You now have a correlation between up-to-date instructions and higher ratings. Or, suppose you study your highly-rated pages and discover that they all start with code samples. You find 10 other pages with their code samples at the bottom, move the samples to the top, and discover that each page’s score has improved. Since this was the only change you introduced on each page, it’s more reasonable to believe that your users find code samples at the top of pages helpful. The scientific method, applied to technical writing, in other words!

Setup

  1. Open your project’s Hugo configuration file.

  2. Set the response text that users see after clicking Yes or No.

    [params.ui.feedback]
    enable = true
    yes = 'Glad to hear it! Please <a href="https://github.com/USERNAME/REPOSITORY/issues/new">tell us how we can improve</a>.'
    no = 'Sorry to hear that. Please <a href="https://github.com/USERNAME/REPOSITORY/issues/new">tell us how we can improve</a>.'
    params:
      ui:
        feedback:
          enable: true
          'yes': >-
            Glad to hear it! Please <a href="https://github.com/USERNAME/REPOSITORY/issues/new">
            tell us how we can improve</a>.        
          'no': >-
            Sorry to hear that. Please <a href="https://github.com/USERNAME/REPOSITORY/issues/new">
            tell us how we can improve</a>.        
    {
      "params": {
        "ui": {
          "feedback": {
            "enable": true,
            "yes": "Glad to hear it! Please <a href=\"https://github.com/USERNAME/REPOSITORY/issues/new\"> tell us how we can improve</a>.",
            "no": "Sorry to hear that. Please <a href=\"https://github.com/USERNAME/REPOSITORY/issues/new\"> tell us how we can improve</a>."
          }
        }
      }
    }
  3. Save the edits to your configuration file.

By default, Docsy emits an event value of 100 when a user clicks “yes”. You can change this value by setting params.ui.feedback.max_value to a positive integer. Docsy uses 0 for “no” events.

Access the feedback data

Page feedback is reported to Google Analytics through events.

This section assumes basic familiarity with Google Analytics. For example, you should know how to check pageviews over a certain time range and navigate between accounts if you have access to multiple documentation sites.

  1. Open Google Analytics.
  2. Open Reports > Engagement > Events.
  3. Click page_helpful in the events table. If there is no page_helpful event, then none have been registered for the selected period. Adjust the period as necessary.

Note that you might be required to create a custom report if you’d like better visualize individual data points (per page) along with average values.

Disable feedback on a single page

Add the parameter hide_feedback to the page’s front matter and set it to true.

+++
hide_feedback = true
+++
---
hide_feedback: true
---
{
    "hide_feedback": true
}

Disable feedback on all pages

Set params.ui.feedback.enable to false in hugo.toml/hugo.yaml/hugo.json:

[params.ui.feedback]
enable = false
params:
  ui:
    feedback:
      enable: false
{
  "params": {
    "ui": {
      "feedback": {
        "enable": false
      }
    }
  }
}

Add a contact form with Fabform

You can create a contact form for your site and collect your form submissions at fabform.io. To use this feature, you first need to sign up for an account with Fabform. The following example shows how to add a simple form that collects the user’s email address to your site source:

<form action="https://fabform.io/f/{form-id}" method="post">
 <label for="email">Your Email</label>
 <input name="email" type="email">
 <button type="submit">Submit</button>
</form>

For more details, see Add a Hugo contact form in the Fabform documentation.

Search Engine Optimization meta tags

To learn how to optimize your site for SEO see, Search Engine Optimization (SEO) Starter Guide.

Google recommends using the description meta tag to tell search engines what your page is about. For each generated page, Docsy will set the content of the meta description by using the first of the following that is defined:

For the template code used to perform this computation, see layouts/partials/page-description.html.

Add more meta tags as needed to your project’s copy of the head-end.html partial. For details, see Customizing templates.

10 - Repository Links and other page information

Help your users interact with page source and view page-source information.

The Docsy docs and blog layouts include links for readers to edit the page or create issues for your docs or project via your site’s source repository. The current generated links for each docs or blog page are:

  • View page source: Brings the user to the page source in your docs repo.
  • Edit this page: Brings the user to an editable version of the page content in their fork (if available) of your docs repo. If the user doesn’t have a current fork of your docs repo, they are invited to create one before making their edit. The user can then create a pull request for your docs.
  • Create child page: Brings the user to a create new file form in their fork of your docs repo. The new file will be located as a child of the page they clicked the link on. The form will be pre-populated with a template the user can edit to create their page. You can change this by adding assets/stubs/new-page-template.md to your own project.
  • Create documentation issue: Brings the user to a new issue form in your docs repo with the name of the current page as the issue’s title.
  • Create project issue (optional): Brings the user to a new issue form in your project repo. This can be useful if you have separate project and docs repos and your users want to file issues against the project feature being discussed rather than your docs.

This page shows you how to configure these links.

Currently, Docsy supports only GitHub repository links “out of the box”. Since GitLab can handle the same link scheme, it should work as well. If you are using another repository such as Bitbucket and would like generated repository links, feel free to add a feature request or update our theme.

There are four site variables you can configure in hugo.toml/hugo.yaml/hugo.json to set up links, as well as one in your page metadata.

github_repo

The URL for your site’s source repository. This is used to generate the Edit this page, Create child page, and Create documentation issue links.

[params]
github_repo = "https://github.com/google/docsy"
params:
  github_repo: https://github.com/google/docsy
{
  "params": {
    "github_repo": "https://github.com/google/docsy"
  }
}

github_subdir (optional)

Specify a value here if your content directory is not in your repo’s root directory. For example, this site is in the userguide subdirectory of its repo. Setting this value means that your edit links will go to the right page.

[params]
github_subdir = "userguide"
params:
  github_subdir: userguide
{
  "params": {
    "github_subdir": "userguide"
  }
}

github_project_repo (optional)

Specify a value here if you have a separate project repo and you’d like your users to be able to create issues against your project from the relevant docs. The Create project issue link appears only if this is set.

[params]
github_project_repo = "https://github.com/google/docsy"
params:
  github_project_repo: https://github.com/google/docsy
{
  "params": {
    "github_project_repo": "https://github.com/google/docsy"
  }
}

github_branch (optional)

Specify a value here if you have would like to reference a different branch for the other github settings like Edit this page or Create project issue.

[params]
github_branch = "release"
params:
  github_branch: release
{
  "params": {
    "github_branch": "release"
  }
}

path_base_for_github_subdir (optional)

Suppose that the source files for all of the pages under content/some-section come from another repo, such as a git submodule. Add settings like these to the section’s index page so that the repository links for all pages in that section refer to the originating repo:

+++
title = "Some super section"
[cascade]
github_repo = "https://github.com/some-username/another-repo/"
github_subdir = "docs"
path_base_for_github_subdir = "content/some-section"

+++
---
title: Some super section
cascade:
  github_repo: https://github.com/some-username/another-repo/
  github_subdir: docs
  path_base_for_github_subdir: content/some-section

---
{
  "title": "Some super section",
  "cascade": {
    "github_repo": "https://github.com/some-username/another-repo/",
    "github_subdir": "docs",
    "path_base_for_github_subdir": "content/some-section"
  }
}

As an example, consider a page at the path content/some-section/subpath/some-page.md with github_branch globally set to main. The index page settings above will generate the following edit link for some-page.md:

https://github.com/some-username/another-repo/edit/main/docs/subpath/some-page.md

If you only have a single page originating from another repo, then omit the cascade key and write, at the top-level, the same settings as illustrated above.

If you’d like users to create project issues in the originating repo as well, then also set github_project_repo, something like this:

---
...
cascade:
  github_repo: &repo https://github.com/some-username/another-repo/
  github_project_repo: *repo
...
---
+++

[cascade]
github_repo = "https://github.com/some-username/another-repo/"
github_project_repo = "https://github.com/some-username/another-repo/"

+++
---

cascade:
  github_repo: &repo https://github.com/some-username/another-repo/
  github_project_repo: *repo

---
{
  "cascade": {
    "github_repo": "https://github.com/some-username/another-repo/",
    "github_project_repo": "https://github.com/some-username/another-repo/"
  }
}

The path_base_for_github_subdir setting is a regular expression, so you can use it even if you have a site with multiple languages for example:

+++

path_base_for_github_subdir = "content/\w+/some-section"

+++
---

path_base_for_github_subdir: content/\w+/some-section

---
{

  "path_base_for_github_subdir": "content/\w+/some-section"

}

In situations where a page originates from a file under a different name, you can specify from and to path-rename settings. Here’s an example where an index file is named README.md in the originating repo:

+++

github_repo = "https://github.com/some-username/another-repo/"
github_subdir = "docs"

[path_base_for_github_subdir]
from = "content/some-section/(.*?)/_index.md"
to = "$1/README.md"

+++
---

github_repo: https://github.com/some-username/another-repo/
github_subdir: docs
path_base_for_github_subdir:
  from: content/some-section/(.*?)/_index.md
  to: $1/README.md

---
{
  
  "github_repo": "https://github.com/some-username/another-repo/",
  "github_subdir": "docs",
  "path_base_for_github_subdir": {
    "from": "content/some-section/(.*?)/_index.md",
    "to": "$1/README.md"
  },
  
}

github_url (optional)

Specify a value for this in your page metadata to set a specific edit URL for this page, as in the following example:

+++
title = "Some page"
github_url = "https://github.com/some-username/another-repo/edit/main/README.md"

+++
---
title: Some page
github_url: https://github.com/some-username/another-repo/edit/main/README.md

---
{
  "title": "Some page",
  "github_url": "https://github.com/some-username/another-repo/edit/main/README.md",
  
}

This can be useful if you have page source files in multiple Git repositories, or require a non-GitHub URL. Pages using this value have Edit this page links only.

You can use CSS to selectively hide links. For example, add the following to your projects’s _styles_project.scss file to hide Create child page links from all pages (optionally with a !important modifier – not shown):

.td-page-meta__child { display: none; }

Each link kind has an associated unique class named .td-page-meta__KIND, as defined by the following table:

Link kindClass name
View page source.td-page-meta__view
Edit this page.td-page-meta__edit
Create child page.td-page-meta__child
Create documentation issue.td-page-meta__issue
Create project issue.td-page-meta__project-issue

Of course, you can also use these classes to give repository links unique styles for your project.

Last-modified page metadata

To have page-source metadata displayed at the bottom of documentation pages and blog posts, set the GitInfo configuration parameter to true, and ensure that params.github_repo is defined.

A last-modified page note looks something like this:

Last modified November 29, 2023: Release v0.8.0 preparation (#1756) (6bb4f99)

Once enabled site-wide, you can selectively hide last-modified notes in a page or section by declaring the following style (optionally with a !important modifier — not shown):

.td-page-meta__lastmod { display: none; }

11 - Taxonomy Support

Structure the content using taxonomies like tags, categories, labels.

Docsy supports Hugo’s Taxonomies (see: https://gohugo.io/content-management/taxonomies/) in its docs and blog section. You can see the default layout and can test the behavior of the generated links on this page.

Terminology

To understand the usage of taxonomies you should understand the following terminology:

Taxonomy
a categorization that can be used to classify content - e.g.: Tags, Categories, Projects, People
Term
a key within the taxonomy - e.g. within projects: Project A, Project B
Value
a piece of content assigned to a term - e.g. a page of your site, that belongs to a specific project

A example taxonomy for a movie website you can find in the official Hugo docs: https://gohugo.io/content-management/taxonomies/#example-taxonomy-movie-website

Parameters

There are various parameter to control the functionality of taxonomies in the project configuration file.

By default taxonomies for tags and categories are enabled in Hugo (see: https://gohugo.io/content-management/taxonomies/#default-taxonomies). In Docsy taxonomies are disabled by default in the hugo.toml/hugo.yaml/hugo.json:

disableKinds = ["taxonomy", "taxonomyTerm"]
disableKinds:
  - taxonomy
  - taxonomyTerm
{
  "disableKinds": [
    "taxonomy",
    "taxonomyTerm"
  ]
}

If you want to enable taxonomies in Docsy you have to delete (or comment out) this line in your project’s hugo.toml/hugo.yaml/hugo.json. Then the taxonomy pages for tags and categories will be generated by Hugo. If you want to use other taxonomies you have to define them in your configuration file. If you want to use beside your own taxonomies also the default taxonomies tags and categories, you also have to define them beside your own taxonomies. You need to provide both the plural and singular labels for each taxonomy.

With the following example you define a additional taxonomy projects beside the default taxonomies tags and categories:

[taxonomies]
tag = "tags"
category = "categories"
project = "projects"
taxonomies:
  tag: tags
  category: categories
  project: projects
{
  "taxonomies": {
    "tag": "tags",
    "category": "categories",
    "project": "projects"
  }
}

You can use the following parameters in your project’s hugo.toml/hugo.yaml/hugo.json to control the output of the assigned taxonomy terms for each article resp. page of your docs and/or blog section in Docsy or a “tag cloud” in Docsy’s right sidebar:

[params.taxonomy]
taxonomyCloud = ["projects", "tags"] # set taxonomyCloud = [] to hide taxonomy clouds
taxonomyCloudTitle = ["Our Projects", "Tag Cloud"] # if used, must have same length as taxonomyCloud
taxonomyPageHeader = ["tags", "categories"] # set taxonomyPageHeader = [] to hide taxonomies on the page headers
params:
  taxonomy:
    taxonomyCloud:
      - projects    # remove all entries
      - tags        # to hide taxonomy clouds
    taxonomyCloudTitle:   # if used, must have the same
      - Our Projects      # number of entries as taxonomyCloud
      - Tag Cloud
    taxonomyPageHeader:
      - tags        # remove all entries
      - categories  # to hide taxonomy clouds
{
  "params": {
    "taxonomy": {
      "taxonomyCloud": [
        "projects",
        "tags"
      ],
      "taxonomyCloudTitle": [
        "Our Projects",
        "Tag Cloud"
      ],
      "taxonomyPageHeader": [
        "tags",
        "categories"
      ]
    }
  }
}

The settings above would only show a taxonomy cloud for projects and tags (with the headlines “Our Projects” and “Tag Cloud”) in Docsy’s right sidebar and the assigned terms for the taxonomies tags and categories for each page.

To disable any taxonomy cloud you have to set the Parameter taxonomyCloud = [] resp. if you don’t want to show the assigned terms you have to set taxonomyPageHeader = [].

As default the plural label of a taxonomy is used as it cloud title. You can overwrite the default cloud title with taxonomyCloudTitle. But if you do so, you have to define a manual title for each enabled taxonomy cloud (taxonomyCloud and taxonomyCloudTitle must have the same length!).

If you don’t set the parameters taxonomyCloud resp. taxonomyPageHeader the taxonomy clouds resp. assigned terms for all defined taxonomies will be generated.

Partials

The by default used partials for displaying taxonomies are so defined, that you should be able to use them also easily in your own layouts.

taxonomy_terms_article

The partial taxonomy_terms_article shows all assigned terms of an given taxonomy (partial parameter taxo) of an article respectively page (partial parameter context, most of the time the current page or context .).

Example usage in layouts/docs/list.html for the header of each page in the docs section:

{{ $context := . }}
{{ range $taxo, $taxo_map := .Site.Taxonomies }}
  {{ partial "taxonomy_terms_article.html" (dict "context" $context "taxo" $taxo ) }}
{{ end }}

This will gave you for each in the current page (resp. context) defined taxonomy a list with all assigned terms:

<div class="taxonomy taxonomy-terms-article taxo-categories">
  <h5 class="taxonomy-title">Categories:</h5>
  <ul class="taxonomy-terms">
    <li><a class="taxonomy-term" href="//localhost:1313/categories/taxonomies/" data-taxonomy-term="taxonomies"><span class="taxonomy-label">Taxonomies</span></a></li>
  </ul>
</div>
<div class="taxonomy taxonomy-terms-article taxo-tags">
  <h5 class="taxonomy-title">Tags:</h5>
  <ul class="taxonomy-terms">
    <li><a class="taxonomy-term" href="//localhost:1313/tags/tagging/" data-taxonomy-term="tagging"><span class="taxonomy-label">Tagging</span></a></li>
    <li><a class="taxonomy-term" href="//localhost:1313/tags/structuring-content/" data-taxonomy-term="structuring-content"><span class="taxonomy-label">Structuring Content</span></a></li>
    <li><a class="taxonomy-term" href="//localhost:1313/tags/labelling/" data-taxonomy-term="labelling"><span class="taxonomy-label">Labelling</span></a></li>
  </ul>
</div>

taxonomy_terms_article_wrapper

The partial taxonomy_terms_article_wrapper is a wrapper for the partial taxonomy_terms_article with the only parameter context (most of the time the current page or context .) and checks the taxonomy parameters of your project’s hugo.toml/hugo.yaml/hugo.json to loop threw all listed taxonomies in the parameter taxonomyPageHeader resp. all defined taxonomies of your page, if taxonomyPageHeader isn’t set.

taxonomy_terms_cloud

The partial taxonomy_terms_cloud shows all used terms of an given taxonomy (partial parameter taxo) for your site (partial parameter context, most of the time the current page or context .) and with the parameter title as headline.

Example usage in partial taxonomy_terms_clouds for showing all defined taxonomies and its terms:

{{ $context := . }}
{{ range $taxo, $taxo_map := .Site.Taxonomies }}
  {{ partial "taxonomy_terms_cloud.html" (dict "context" $context "taxo" $taxo "title" ( humanize $taxo ) ) }}
{{ end }}

As an example this will gave you for following HTML markup for the taxonomy categories:

<div class="taxonomy taxonomy-terms-cloud taxo-categories">
  <h5 class="taxonomy-title">Cloud of Categories</h5>
  <ul class="taxonomy-terms">
    <li><a class="taxonomy-term" href="//localhost:1313/categories/category-1/" data-taxonomy-term="category-1"><span class="taxonomy-label">category 1</span><span class="taxonomy-count">3</span></a></li>
    <li><a class="taxonomy-term" href="//localhost:1313/categories/category-2/" data-taxonomy-term="category-2"><span class="taxonomy-label">category 2</span><span class="taxonomy-count">1</span></a></li>
    <li><a class="taxonomy-term" href="//localhost:1313/categories/category-3/" data-taxonomy-term="category-3"><span class="taxonomy-label">category 3</span><span class="taxonomy-count">2</span></a></li>
    <li><a class="taxonomy-term" href="//localhost:1313/categories/category-4/" data-taxonomy-term="category-4"><span class="taxonomy-label">category 4</span><span class="taxonomy-count">6</span></a></li>
  </ul>
</div>

taxonomy_terms_clouds

The partial taxonomy_terms_clouds is a wrapper for the partial taxonomy_terms_cloud with the only parameter context (most of the time the current page or context .) and checks the taxonomy parameters of your project’s hugo.toml/hugo.yaml/hugo.json to loop threw all listed taxonomies in the parameter taxonomyCloud resp. all defined taxonomies of your page, if taxonomyCloud isn’t set.

Multi language support for taxonomies

The taxonomy terms associated content gets only counted and linked WITHIN the language! The control parameters for the taxonomy support can also get assigned language specific.

12 - Diagrams and Formulae

Add generated diagrams and scientific formulae to your site.

Docsy has built-in support for a number of diagram creation and typesetting tools you can use to add rich content to your site, including \(\KaTeX\), Mermaid, Diagrams.net, PlantUML, and MarkMap.

\(\LaTeX\) support with \(\KaTeX\)

\(\LaTeX\) is a high-quality typesetting system for the production of technical and scientific documentation. Due to its excellent math typesetting capabilities, \(\TeX\) became the de facto standard for the communication and publication of scientific documents, especially if these documents contain a lot of mathematical formulae. Designed and mostly written by Donald Knuth, the initial version was released in 1978. Dating back that far, \(\LaTeX\) has pdf as its primary output target and is not particularly well suited for producing HTML output for the Web. Fortunately, with \(\KaTeX\) there exists a fast and easy-to-use JavaScript library for \(\TeX\) math rendering on the web, which was integrated into the Docsy theme.

With \(\KaTeX\) support enabled in Docsy, you can include complex mathematical formulae into your web page, either inline or centred on its own line. Since \(\KaTeX\) relies on server side rendering, it produces the same output regardless of your browser or your environment. Formulae can be shown either inline or in display mode:

Inline formulae

The following code sample produces a text line with three inline formulae:

When \\(a \ne 0\\), there are two solutions to \\(ax^2 + bx + c= 0\\) and they are \\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\\).

When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c= 0\) and they are \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\).

Formulae in display mode

The following code sample produces an introductory text line followed by a formula numbered as (1) residing on its own line:

The probability of getting \\(k\\) heads when flipping \\(n\\) coins is:
```math
\tag*{(1)} P(E) = {n \choose k} p^k (1-p)^{n-k}
```

The formula itself is written inside a GLFM math block. The above code fragment renders to:

The probability of getting \(k\) heads when flipping \(n\) coins is:

$$\tag*{(1)} P(E) = {n \choose k} p^k (1-p)^{n-k}$$

Activating and configuring \(\KaTeX\) support

Auto activation

As soon as you use a math code block on your page, support of \(\KaTeX\) is automatically enabled.

Manual activation (no math code block present or hugo 0.92 or lower)

If you want to use inline formulae and don’t have a math code block present in your page which triggers auto activation, you need to manually activate \(\KaTeX\) support. The easiest way to do so is to add a math attribute to the frontmatter of your page and set it to true:

+++
math = true
+++
---
math: true
---
{
  "math": true
}

If you use formulae in most of your pages, you can also enable sitewide \(\KaTeX\) support inside the Docsy theme. To do so update hugo.toml/hugo.yaml/hugo.json:

[params.katex]
enable = true
params:
  katex:
    enable: true
{
  "params": {
    "katex": {
      "enable": true
    }
  }
}

Additionally, you can customize various \(\KaTeX\) options inside hugo.toml/hugo.yaml/hugo.json, if needed:

[params.katex]
# enable/disable KaTeX support
enable = true
# Element(s) scanned by auto render extension. Default: document.body
html_dom_element = "document.body"

[params.katex.options]
# If true (the default), KaTeX will throw a ParseError when it encounters an
# unsupported command or invalid LaTeX. If false, KaTeX will render unsupported
# commands as text, and render invalid LaTeX as its source code with hover text
# giving the error, in the color given by errorColor.
throwOnError = false
errorColor = "#CD5C5C"

# This is a list of delimiters to look for math, processed in the same order as
# the list. Each delimiter has three properties:
#   left:    A string which starts the math expression (i.e. the left delimiter).
#   right:   A string which ends the math expression (i.e. the right delimiter).
#   display: Whether math in the expression should be rendered in display mode.
[[params.katex.options.delimiters]]
  left = "$$"
  right = "$$"
  display = true
[[params.katex.options.delimiters]]
  left = "$"
  right = "$"
  display = false
[[params.katex.options.delimiters]]
  left = "\\("
  right = "\\)"
  display = false
[[params.katex.options.delimiters]]
  left = "\\["
  right = "\\]"
  display = true
params:
  katex:
    enable: true  # enable/disable KaTeX support
    html_dom_element: document.body  # Element(s) scanned by auto render extension. Default: document.body
    options:

      # If true (the default), KaTeX will throw a ParseError when it encounters an
      # unsupported command or invalid LaTeX. If false, KaTeX will render unsupported
      # commands as text, and render invalid LaTeX as its source code with hover text
      # giving the error, in the color given by errorColor.
      throwOnError: false
      errorColor: '#CD5C5C'

      # This is a list of delimiters to look for math, processed in the same order as
      # the list. Each delimiter has three properties:
      #   left:    A string which starts the math expression (i.e. the left delimiter).
      #   right:   A string which ends the math expression (i.e. the right delimiter).
      #   display: Whether math in the expression should be rendered in display mode.
      delimiters:
        - left: $$
          right: $$
          display: true
        - left: $
          right: $
          display: false
        - left: \(
          right: \)
          display: false
        - left: \[
          right: \]
          display: true
{
  "params": {
    "katex": {
      "enable": true,
      "html_dom_element": "document.body",
      "options": {
        "throwOnError": false,
        "errorColor": "#CD5C5C",
        "delimiters": [
          {
            "left": "$$",
            "right": "$$",
            "display": true
          },
          {
            "left": "$",
            "right": "$",
            "display": false
          },
          {
            "left": "\\(",
            "right": "\\)",
            "display": false
          },
          {
            "left": "\\[",
            "right": "\\]",
            "display": true
          }
        ]
      }
    }
  }
}

For a complete list of options and their detailed description, have a look at the documentation of \({\KaTeX}’s\) Rendering API options and of \({\KaTeX}’s\) configuration options.

Display of Chemical Equations and Physical Units

mhchem is a \(\LaTeX\) package for typesetting chemical molecular formulae and equations. Fortunately, \(\KaTeX\) provides the mhchem extension that makes the mhchem package accessible when authoring content for the web. With mhchem extension enabled, you can easily include chemical equations into your page. An equation can be shown either inline or can reside on its own line. The following code sample produces a text line including a chemical equation:

*Precipitation of barium sulfate:* \\(\ce{SO4^2- + Ba^2+ -> BaSO4 v}\\)

Precipitation of barium sulfate: \(\ce{SO4^2- + Ba^2+ -> BaSO4 v}\)

More complex equations need to be displayed on their own line. Use a code block adorned with chem in order to achieve this:

```chem
\tag*{(2)} \ce{Zn^2+  <=>[+ 2OH-][+ 2H+]  $\underset{\text{amphoteric hydroxide}}{\ce{Zn(OH)2 v}}$  <=>[+ 2OH-][+ 2H+]  $\underset{\text{tetrahydroxozincate}}{\ce{[Zn(OH)4]^2-}}$}
```
$$\tag*{(2)} \ce{Zn^2+ <=>[+ 2OH-][+ 2H+] $\underset{\text{amphoteric hydroxide}}{\ce{Zn(OH)2 v}}$ <=>[+ 2OH-][+ 2H+] $\underset{\text{tetrahydroxozincate}}{\ce{[Zn(OH)4]^2-}}$}$$

Use of mhchem is not limited to the authoring of chemical equations, using the included \pu command, pretty looking physical units can be written with ease, too. The following code sample produces two text lines with four numbers plus their corresponding physical units:

* Scientific number notation: \\(\pu{1.2e3 kJ}\\) or \\(\pu{1.2E3 kJ}\\) \\
* Divisions: \\(\pu{123 kJ/mol}\\) or \\(\pu{123 kJ//mol}\\)
  • Scientific number notation: \(\pu{1.2e3 kJ}\) or \(\pu{1.2E3 kJ}\)
  • Divisions: \(\pu{123 kJ/mol}\) or \(\pu{123 kJ//mol}\)

For a complete list of options when authoring physical units, have a look at the section on physical units in the mhchem documentation.

Activating rendering support for chemical formulae

Auto activation

As soon as you use a chem code block on your page, rendering support for chemical equations is automatically enabled.

Manual activation (no chem code block present or hugo 0.92 or lower)

If you want to use chemical formulae inline and don’t have a chem code block present in your page which triggers auto activation, you need to manually activate rendering support for chemical formulae. The easiest way to do so is to add a chem attribute to the frontmatter of your page and set it to true:

+++
chem = true
+++
---
chem: true
---
{
  "chem": true
}

If you use formulae in most of your pages, you can also enable sitewide rendering support for chemical formulae inside the Docsy theme. To do so, enable mhchem inside your hugo.toml/hugo.yaml/hugo.json:

[params.katex]
enable = true

[params.katex.mhchem]
enable = true
params:
  katex:
    enable: true
    mhchem:
      enable: true
{
  "params": {
    "katex": {
      "enable": true,
      "mhchem": {
        "enable": true
      }
    }
  }
}

Diagrams with Mermaid

Mermaid is a Javascript library for rendering simple text definitions to useful diagrams in the browser. It can generate a variety of different diagram types, including flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, user journey diagrams, Gantt charts and pie charts.

With Mermaid support enabled in Docsy, you can include the text definition of a Mermaid diagram inside a code block, and it will automatically be rendered by the browser as soon as the page loads.

The great advantage of this is anyone who can edit the page can now edit the diagram - no more hunting for the original tools and version to make a new edit.

For example, the following defines a sequence diagram:

```mermaid
sequenceDiagram
    autonumber
    Docsy user->>Discussion board: Ask question
    Discussion board->>Community member: read question
    loop Different strategies
    Community member->>Test instance: Investigate issue raised
    end
    Note right of Community member: After hours of investigation:
    Test instance-->>Community member: Come up with solution
    Community member-->>Discussion board: Propose solution
    Discussion board-->>Docsy user: check proposed solution
    Docsy user->>Discussion board: Mark question as resolved
    Docsy user->>Docsy user: Being happy
```

which is automatically rendered to:

sequenceDiagram
    autonumber
    Docsy user->>Discussion board: Ask question
    Discussion board->>Community member: read question
    loop Different strategies
    Community member->>Test instance: Investigate issue raised
    end
    Note right of Community member: After hours of investigation:
    Test instance-->>Community member: Come up with solution
    Community member-->>Discussion board: Propose solution
    Discussion board-->>Docsy user: check proposed solution
    Docsy user->>Discussion board: Mark question as resolved
    Docsy user->>Docsy user: Being happy

Support of Mermaid diagrams is automatically enabled as soon as you use a mermaid code block on your page.

By default, docsy pulls in the latest officially released version of Mermaid at build time. If that doesn’t fit your needs, you can specify the wanted mermaid version inside your configuration file hugo.toml/hugo.yaml/hugo.json:

[params.mermaid]
version = "10.8.0"
params:
  mermaid:
    version: 10.8.0
{
  "params": {
    "mermaid": {
      "version": "10.8.0"
    }
  }
}

If needed, you can define custom settings for your diagrams, such as themes, padding in your hugo.toml/hugo.yaml/hugo.json.

[params.mermaid]
theme = "neutral"

[params.mermaid.flowchart]
diagramPadding = 6
params:
  mermaid:
    theme: neutral
    flowchart:
      diagramPadding: 6
{
  "params": {
    "mermaid": {
      "theme": "neutral",
      "flowchart": {
        "diagramPadding": 6
      }
    }
  }
}

See the Mermaid documentation for a list of defaults that can be overridden.

Settings can also be overridden on a per-diagram basis by making use of a frontmatter config block at the start of the diagram definition.

UML Diagrams with PlantUML

PlantUML is an alternative to Mermaid that lets you quickly create UML diagrams, including sequence diagrams, use case diagrams, and state diagrams. Unlike Mermaid diagrams, which are entirely rendered in the browser, PlantUML uses a PlantUML server to create diagrams. You can use the provided default demo server (not recommended for production use), or run a server yourself. PlantUML offers a wider range of image types than Mermaid, so may be a better choice for some use cases.

Diagrams are defined using a simple and intuitive language. (see PlantUML Language Reference Guide).

The following example shows a use case diagram:

```plantuml
participant participant as Foo
actor       actor       as Foo1
boundary    boundary    as Foo2
control     control     as Foo3
entity      entity      as Foo4
database    database    as Foo5
collections collections as Foo6
queue       queue       as Foo7
Foo -> Foo1 : To actor
Foo -> Foo2 : To boundary
Foo -> Foo3 : To control
Foo -> Foo4 : To entity
Foo -> Foo5 : To database
Foo -> Foo6 : To collections
Foo -> Foo7: To queue
```

Automatically renders to:

participant participant as Foo
actor       actor       as Foo1
boundary    boundary    as Foo2
control     control     as Foo3
entity      entity      as Foo4
database    database    as Foo5
collections collections as Foo6
queue       queue       as Foo7
Foo -> Foo1 : To actor
Foo -> Foo2 : To boundary
Foo -> Foo3 : To control
Foo -> Foo4 : To entity
Foo -> Foo5 : To database
Foo -> Foo6 : To collections
Foo -> Foo7: To queue

To enable/disable PlantUML, update hugo.toml/hugo.yaml/hugo.json:

[params.plantuml]
enable = true
params:
  plantuml:
    enable: true
{
  "params": {
    "plantuml": {
      "enable": true
    }
  }
}

Other optional settings are:

[params.plantuml]
enable = true
theme = "default"

# Set url to plantuml server
# default is http://www.plantuml.com/plantuml/svg/
svg_image_url = "https://www.plantuml.com/plantuml/svg/"

# By default the plantuml implementation uses <img /> tags to display UML diagrams.
# When svg is set to true, diagrams are displayed using <svg /> tags, maintaining functionality like links e.g.
# default = false
svg = true
params:
  plantuml:
    enable: true
    theme: default
    # Set url to plantuml server
    # default is http://www.plantuml.com/plantuml/svg/
    svg_image_url: 'https://www.plantuml.com/plantuml/svg/'
    # By default the plantuml implementation uses <img /> tags to display UML diagrams.
    # When svg is set to true, diagrams are displayed using <svg /> tags, maintaining functionality like links e.g.
    # default = false
    svg: true
{
  "params": {
    "plantuml": {
      "enable": true,
      "theme": "default",
      "svg_image_url": "https://www.plantuml.com/plantuml/svg/",
      "svg": true
    }
  }
}

MindMap support with MarkMap

MarkMap is a Javascript library for rendering simple text definitions to MindMap in the browser.

For example, the following defines a simple MindMap:

```markmap
# markmap

## Links

- <https://markmap.js.org/>
- [GitHub](https://github.com/gera2ld/markmap)

## Related

- [coc-markmap](https://github.com/gera2ld/coc-markmap)
- [gatsby-remark-markmap](https://github.com/gera2ld/gatsby-remark-markmap)

## Features

- links
- **inline** ~~text~~ *styles*
- multiline
  text
- `inline code`
-
    ```js
    console.log('code block');
    ```
- Katex - $x = {-b \pm \sqrt{b^2-4ac} \over 2a}$
```

Automatically renders to:

# markmap

## Links

- <https://markmap.js.org/>
- [GitHub](https://github.com/gera2ld/markmap)

## Related

- [coc-markmap](https://github.com/gera2ld/coc-markmap)
- [gatsby-remark-markmap](https://github.com/gera2ld/gatsby-remark-markmap)

## Features

- links
- **inline** ~~text~~ *styles*
- multiline
  text
- `inline code`
-
    ```js
    console.log('code block');
    ```
- Katex - $x = {-b \pm \sqrt{b^2-4ac} \over 2a}$

To enable/disable MarkMap, update hugo.toml/hugo.yaml/hugo.json:

[params.markmap]
enable = true
params:
  markmap:
    enable: true
{
  "params": {
    "markmap": {
      "enable": true
    }
  }
}

Diagrams with Diagrams.net

Diagrams.net (aka draw.io) provides a free and open source diagram editor that can generate a wider range of diagrams than Mermaid or PlantUML using a web or desktop editor.

SVG and PNG files exported with the tool contain the source code of the original diagram by default, which allows the diagrams.net site to import those images again for edit in the future. With draw.io enabled, Docsy will detect this and automatically add an Edit button over any image that can be edited using the online site.

Hover over the image below and click edit to instantly start working with it. Clicking the Save button will cause the edited diagram to be exported using the same filename and filetype, and downloaded to your browser.

As the diagram data is transported via the browser, the diagrams.net server does not need to access the content on your Docsy server directly at all.

Mouse over the above image and click the Edit button!

Mouse over the above image and click the Edit button!

To enable detection of diagrams, update hugo.toml/hugo.yaml/hugo.json:

[params.drawio]
enable = true
params:
  drawio:
    enable: true
{
  "params": {
    "drawio": {
      "enable": true
    }
  }
}

You can also deploy and use your own server for editing diagrams, in which case update the configuration to point to that server:

[params.drawio]
drawio_server = "https://app.mydrawioserver.example.com"
params:
  drawio:
    drawio_server: 'https://app.mydrawioserver.example.com'
{
  "params": {
    "drawio": {
      "drawio_server": "https://app.mydrawioserver.example.com"
    }
  }
}