qr decoder

Decode QR codes using your device camera. Available in the hypothesis.sh companion app for iOS.

Overview

Point your camera at any QR code and the decoded contents appear instantly — no shutter press required. The decoder runs entirely on-device; nothing is uploaded or sent to a server.

This tool is exclusive to the mobile app. There is no web version, since browser camera access is less reliable than the native scanner and most QR decoding happens away from a desk anyway.

What it decodes

Any standard QR code payload, including:

  • URLs — with a one-tap option to open the link
  • Plain text — copyable to the clipboard
  • WiFi credentials — codes in WIFI:T:...;S:...;P:...;; format, like those produced by the qr code generator
  • Contact cards — vCard payloads

Round-tripping with the qr code tool

The decoder pairs with the qr code web tool: generate a code on the desktop, scan it with the app to move a URL or snippet of text to your phone without typing. WiFi and vCard codes generated by the web tool decode into their structured form.

Privacy

Camera frames are processed locally on the device. Decoded contents are never transmitted, logged, or stored beyond the current session.