qifi-dev/qrs

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1670 stars · 107 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Qrs is a TypeScript tool that streams arbitrary data through a series of QR codes, enabling file transfer without a network connection. It uses Luby Transform (fountain) coding so a receiver can reconstruct the data from any sufficient subset of scanned frames, and ships a CLI plus a QR generation library.

Use cases

• transfer files between devices with no network or cable
• airgap data exfiltration-free transfer via camera scanning
• send files to a phone by displaying scrolling QR codes
• recover data even if some QR frames are missed
• embed QR-based data streaming into a Node.js app

When to choose

• you need offline, network-free file transfer between a screen and a camera
• you want loss-tolerant transmission via fountain codes
• you want a CLI or library for QR code data streaming

When to avoid

• you need fast bulk transfers of large files
• you have a normal network connection available
• you need bidirectional real-time communication

Facets

library · maturity active

serialization cli sdk files developer-tools cross-platform cli cross-platform qrcode file-transfer fountain-codes luby-transform airgap data-transmission nodejs web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="qifi-dev/qrs")