Frontend Frameworks

documentation.js

Generate API documentation for ES2015+ and Flow-annotated code.

Status
UnmaintainedNo commits in 543 days.
Last checked
Checked · Oct 15, 2026
License
Open source
Pricing
Free tier · from $0

What it is

Documentation.js is an open-source tool that generates comprehensive API documentation from your JavaScript source files, supporting modern ECMAScript features and Flow type annotations. It's essential for developers looking to maintain clear and up-to-date documentation alongside their evolving codebases.

Documentation.js stands out as an open-source, extensible solution specifically designed to generate comprehensive API documentation from modern JavaScript codebases with support for ES2015+ and Flow annotations.

When it fits — and when it doesn’t

A good fit for

  • JavaScript developers who need to maintain clear and up-to-date API documentation

  • Teams working on large-scale JavaScript applications with complex APIs

  • Open-source project maintainers looking for automated documentation generation

Look elsewhere if

  • Projects that require real-time documentation updates (documentation.js generates static output)

  • Users who prefer a web-based UI for managing their documentation (it's a command-line tool)

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited customization options for output formats

    While documentation.js supports HTML and Markdown, advanced customization requires significant effort and may not cover all use cases.

  2. 02

    Poor handling of complex code structures

    Documentation.js can struggle with documenting deeply nested or highly modular JavaScript applications, leading to incomplete or inaccurate documentation.

  3. 03

    Inconsistent support for Flow type annotations

    Flow annotation parsing is not always reliable, which can result in missing or incorrect information in the generated documentation.

  4. 04

    Lack of real-time updates and integration with modern CI/CD pipelines

    Documentation.js does not natively support automatic documentation generation within continuous integration workflows, requiring manual intervention or additional configuration.

What it does well

  • Support for ES2015+ and Flow annotations

  • Generates documentation from source code comments

  • Customizable output formats (HTML, Markdown)

  • Extensible through plugins

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up documentation.js

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
Get the badge

A small badge for documentation.js’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.

documentation.js — tracked on AI Navigator

Markdown

[![documentation.js — tracked on AI Navigator](https://navigateaitools.com/badge/documentation-js.svg)](https://navigateaitools.com/explorer/tool/documentation-js)

HTML

<a href="https://navigateaitools.com/explorer/tool/documentation-js"><img src="https://navigateaitools.com/badge/documentation-js.svg" alt="documentation.js — tracked on AI Navigator" height="58"></a>