01 / Technologies / Framework

Detect React in any GitHub repo

React is Meta's component library for building user interfaces, and the base layer of Next.js, Remix, Expo and most of the modern frontend ecosystem.

Why show React on your README

React shows up in a huge share of JavaScript repos; listing it next to the framework and state library tells a reader exactly which flavour of React app they're looking at.

How React is detected

Stack Fingerprint reads the repo's full file tree in one GitHub API call and flags React when it finds any of these:

  • Files or folders: craco.config.js, craco.config.ts
  • Dependencies in package.json: react

React README badge

A static badge you can paste anywhere in Markdown:

React badge

Markdown
![React](https://img.shields.io/badge/React-61DAFB?style=for-the-badge&logo=react&logoColor=white)

Or let the repo describe itself

Static badges go stale the moment you swap a dependency. A Stack Fingerprint card is generated from the repo, so React (and everything around it) appears or disappears on its own:

Tech stack card for excalidraw/excalidraw
excalidraw/excalidraw · generated live from the repo
README.md
[![Stack Fingerprint](https://stackfingerprint.vercel.app/api/card?repo=OWNER/REPO)](https://stackfingerprint.vercel.app/?repo=OWNER/REPO)

Replace OWNER/REPO with your repository, or open the builder to pick a theme and layout.