cozmo/jsQR

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

4026 stars · 615 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

jsQR is a pure JavaScript QR code reading library that takes raw image data (RGBA pixel arrays) and locates, extracts, and parses any QR code within it. It is platform-agnostic, working in browsers, Node.js, or with module bundlers, and can decode from webcam streams, uploaded images, or backend processes.

Use cases

• decode qr codes from images in javascript
• scan qr codes from webcam stream in browser
• read qr codes in a node.js backend
• extract qr code data from uploaded images
• add qr code scanning to a web app without native dependencies
• parse qr codes from canvas imagedata

When to choose

• you need a dependency-free, pure JavaScript QR decoder
• you want the same decoding logic across browser and Node.js
• you already have image data (ImageData, canvas, or decoded PNG/JPEG) and just need QR extraction
• you need to decode QR codes with inverted colors (white on black)

When to avoid

• you need to generate QR codes rather than read them
• you need to scan other barcode formats like EAN or Code128
• you want a turnkey camera-scanning component with UI included
• you need native-level performance for high-volume image processing

Facets

library · maturity stable

image-processing parser computer-vision computer-vision web-development frontend browser cross-platform qr-code qr-decoder typescript barcode-scanning nodejs

Member repositories

For agents

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