Partial Tag Built-in Markdoc Tag

The partial tag enables you to reuse content across your documentation, bringing the concept of single-source publishing to your technical writing.

Syntax and usage

Use the partial tag to render content pulled from a file in the _partials folder. The file attribute is used to pass a pointer to the source file.

Example syntax:

## Setup steps

{% partial file="/_partials/tutorial-first-steps.md" /%}

Partials in Redocly

Use partial folders

In Redocly, content is only exposed for reuse when a file is stored in a designated partials folder.

By default, you can add partials by moving files into a _partials folder in the root of your project. To add custom folders for partials, you'll need to register them using the partialFolders property in the theme.markdown section of your Redocly configuration file.

Limitations of partials

Reference links

You can't use reference-style Markdown links inside the partial because they resolve incorrectly upon page load. If you're using links inside a partial, then absolute links are the best approach.

Attributes

Examples

The following example shows how to use partials to add a Learning Resources section that can be shared across different guides or tutorials.

Example partial content:

#### Redocly CLI Learning Resources

The following resources will help you learn more about the Redocly CLI:

* [Redocly CLI commands](/docs/cli/commands/index.md) - Learn the commands built into the CLI.
* [Configure API linting](/docs/cli/guides/configure-rules.md) - Learn how to tailor the Redocly CLI linting for your own needs.
* [Redocly CLI cookbook](https://github.com/Redocly/redocly-cli-cookbook) - Bite-sized example CLI customizations to inspire your own. 

Example partial syntax:

{% partial file="/_partials/redocly-cli-resources.md" /%}

Example partial elements:

Best practices

Partials are especially useful for repeatable content where you want to maintain a central source of truth. Partials add value by improving writer productivity, ensuring information consistency, or reducing maintenance costs.

Descriptive filenames

Giving your partial a descriptive filename helps the author using it understand what to find there.

Make partials composable

All partials render as a whole, meaning all content inside the source file renders. You want content to be self-contained enough that it can be used throughout other documents without additional context needed.

Use code-snippet for code partials

If a partial contains only code, then the code snippet tag may be a better choice. The code snippet tag allows you to insert specific parts of a code sample, which provides more flexibility.

Favor absolute links over relative

Using absolute links in your partials will ensure that they resolve correctly everywhere that the content is reused.

Nest with caution

Partials can be nested, but that can make confusing for authors to work with. If you use nesting, create a folder structure that helps keep things organized.