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What is readthedocs.org?

readthedocs/readthedocs.org — explained in plain English

Analysis updated 2026-06-24

8,351PythonAudience · developerComplexity · 4/5LicenseSetup · hard

In one sentence

The source code for Read the Docs, the free documentation hosting platform used by thousands of open-source projects to automatically build and publish docs from their Git repositories on every commit.

Mindmap

mindmap
  root((Read the Docs))
    What it does
      Doc hosting
      Auto build and publish
    How it works
      Git webhooks
      Sphinx support
      MkDocs support
    Hosted service
      GitHub sign-in
      One-click add project
    Audience
      Open source maintainers
      Contributors
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Code map

Detail Auto

An interactive map of this repo's files and how they connect — its source is parsed live in your browser. Click Visualize to build it.

filefunction / class

What do people build with it?

USE CASE 1

Self-host the entire Read the Docs platform for your organization to publish internal documentation automatically on every git push.

USE CASE 2

Contribute a bug fix or feature to the readthedocs.org service by running the full application locally.

USE CASE 3

Study how a large Django application integrates with Sphinx and MkDocs to automate documentation builds from Git webhooks.

USE CASE 4

Add your open-source project to the hosted readthedocs.org service: sign in with GitHub, grant access, and get auto-publishing in minutes.

What is it built with?

PythonDjangoSphinxMkDocs

How does it compare?

readthedocs/readthedocs.orgnebuly-ai/optimatedetailyang/awesome-cheatsheet
Stars8,3518,3478,346
LanguagePythonPythonPython
Setup difficultyhardhardeasy
Complexity4/54/51/5
Audiencedeveloperdatadeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1day+

This is the full Read the Docs platform application, not a library, self-hosting requires a complete Django + database + build worker infrastructure setup.

Use freely for any purpose, including commercial, as long as you keep the copyright notice.

So what is it?

This is the source code for Read the Docs, the free documentation hosting service that many open-source software projects use to publish their documentation online. If you have ever clicked a link to docs.something.io or readthedocs.io while looking up how to use a Python library or other open-source tool, you have likely used a site hosted by Read the Docs. The service works by connecting to a Git repository, watching it for changes, and automatically building and publishing the documentation every time someone pushes new code. You point it at your repository, and it handles the build and hosting steps. It supports the two most common documentation systems in the Python world: Sphinx, which uses a format called reStructuredText, and MkDocs, which uses standard Markdown. The quickstart described in the README is short: create an account by signing in with GitHub, grant access, add your project by searching for the repository name, and you are done. After that, every commit you push triggers an automatic documentation rebuild without any further manual steps. The README describes this approach as continuous documentation, treating docs the same way continuous integration treats code. This repository is not a library you install and use in your own project. It is the actual application that runs the readthedocs.org platform. Developers who want to contribute to the platform itself or run a self-hosted version would work with this code. The project is licensed under MIT.

Copy-paste prompts

Prompt 1
Walk me through setting up a local development environment for the readthedocs.org codebase on macOS so I can submit a bug fix pull request.
Prompt 2
Explain the Read the Docs build pipeline from a git push to the docs appearing live, which modules handle the webhook, the build queue, and the static file serving?
Prompt 3
Show me how readthedocs.org handles Sphinx vs MkDocs projects differently, which parts of the codebase diverge for each?
Prompt 4
I want to add a new feature to Read the Docs that shows a word count on each doc page, where in the codebase would I start?

Frequently asked questions

What is readthedocs.org?

The source code for Read the Docs, the free documentation hosting platform used by thousands of open-source projects to automatically build and publish docs from their Git repositories on every commit.

What language is readthedocs.org written in?

Mainly Python. The stack also includes Python, Django, Sphinx.

What license does readthedocs.org use?

Use freely for any purpose, including commercial, as long as you keep the copyright notice.

How hard is readthedocs.org to set up?

Setup difficulty is rated hard, with roughly 1day+ to a first successful run.

Who is readthedocs.org for?

Mainly developer.

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