READMEs · Open-source developer software

react README

README demonstrates: React · [](https://github.com/facebook/react/blob/main/LICENSE) [](https://www.npmjs.com/package/react) [](https://github.com/facebook/react/actions/workflows/runtime_build_and_test.yml) [](https://github.com/facebook/react/actions/workflows/compiler_typescript.yml) [](https://legacy.reactjs.org/docs/how-to-contribute.html#your-first-pull-request) React is a JavaScript library for building user interfaces. GitHub's fetched Contents API response identifies README.md and reports the current blob SHA 88f8e827b0255cf639043c83833c7a0c40ec0991 The fetched GitHub commits endpoint identifies 4e482f490405c0c601d8712a0625fd17c04978e4 as the latest commit affecting this README path.

Reviewed 2026-10-09View reviewed source ↗

Our interpretation

Useful when you are building…

Use this README as an example for explaining react and guiding technical readers toward an initial use or relevant project resource.

Visible first resultUpfront prerequisitesSupport routes

Observed in the source

Patterns and sections

Collapse file tree

The README includes a distinct collapse file tree section that helps users locate setup or product information.

Files

The README includes a distinct files section that helps users locate setup or product information.

README.md

The README includes a distinct readme.md section that helps users locate setup or product information.

Section labels refer to the reviewed public source. Visual design and mobile behavior of the external page were not evaluated.

Adaptation ideas

What to apply to your own product

Make the intended user and core purpose clear near the top.
Offer a runnable first step and link to fuller documentation.
Explain contribution, troubleshooting and support routes where relevant.

Tradeoff to consider

Open-source project READMEs support installation and contributor orientation; they may not answer commercial buyer questions.

Starting route

Read the Collapse file tree section and follow its first practical setup or usage route.

Source and version

react/README.md at 4e482f490405c0c601d8712a0625fd17c04978e4 · react/react · GitHub ↗https://github.com/react/react/blob/4e482f490405c0c601d8712a0625fd17c04978e4/README.md

Reviewed README at commit 4e482f490405c0c601d8712a0625fd17c04978e4. The linked file is pinned to that revision; the live repository may change.

Retrieved with Firecrawl. Content reviewed; product not installed or tested. Annotations are original editorial analysis.