schmich/instascan
HTML5 QR code scanner using your webcam observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3721
- days_rel: n/a
- days_push: 1722
- n_releases_24m: 0
Adoption not part of the score
3022 stars · 855 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Instascan is a JavaScript library that provides real-time QR code scanning from a webcam feed in the browser, built on top of ZXing compiled with Emscripten. It exposes a simple event-driven API for continuous or manual scanning with a live video preview.
Use cases
- scan QR codes with a webcam in the browser
- add QR code scanning to a web page
- read QR codes from camera in real time
- build a check-in or ticket-scanning web app
- decode QR codes using JavaScript without a server
When to choose
- you need client-side QR scanning in Chrome over HTTPS with a simple event-based API
- you want real-time continuous scanning with a video preview element
When to avoid
- you need to scan barcodes other than QR codes
- you need broad browser support beyond Chrome or offline file-based decoding
- you need an actively maintained library with recent updates
Facets
library · maturity maintenance
computer-vision image-processing browser-extension web-development computer-vision frontend browser qr-code webcam webrtc zxing real-time-scanning camera-access javascript web-server
3 sources
- readme: https://github.com/schmich/instascan · fetched 2026-08-28 · edf5800aab9a
- homepage: https://schmich.github.io/instascan/ · fetched 2026-08-29 · 6245a44a21a3
- registry_npm: https://registry.npmjs.org/instascan · fetched 2026-08-29 · 8fced64bca4b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| schmich/instascan | main | 23 |
For agents
markdown · JSON · MCP: product_card(name="schmich/instascan")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem