# facebook/react-devtools

An extension that allows inspection of React component hierarchy in the Chrome and Firefox Developer Tools.

Repository: https://github.com/facebook/react-devtools
Canonical: https://ross.abutalabs.com/products/react-devtools
License: NOASSERTION
License Family: other
Archived: true
Last push: 2019-09-03T10:48:51+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4746, "days_push": 2556, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 11012, forks 1760 (observed 2026-08-28T04:10:45.870561+00:00)

## What it is
React DevTools is a browser extension for Chrome and Firefox that lets developers inspect the React component hierarchy within the browser's Developer Tools. This repository has migrated into the main facebook/react monorepo, with v3 source preserved on the v3 branch.

## Use cases
- inspect react component hierarchy in devtools
- debug react component props and state in browser
- view react component tree while developing
- profile react app performance in chrome
- find which react component renders an element

## When to choose
- you develop React apps and need component-level inspection in Chrome or Firefox
- you want to debug props, state, and hierarchy of React components live in the browser

## When to avoid
- you need the latest v4+ features, which live in the facebook/react monorepo
- you debug non-React frontend frameworks
- you need a standalone (non-browser) React inspector without building from the v3 branch

## Facets
- artifact type: plugin
- maturity: maintenance
- function: developer-tools, ui-components
- domain: frontend, web-development, developer-tools
- platform: browser-extension, browser
- tags: react, devtools, debugging, chrome-extension, firefox-extension, component-inspection

## Member repositories
- facebook/react-devtools (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:45.870561+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:17:13.222707+00:00, confidence not recorded.
  - readme: https://github.com/facebook/react-devtools (fetched 2026-08-28T04:10:45.870561+00:00, sha a2fb383914b2)
- Data as of 2026-08-30T08:39:29.467469+00:00.