Decoder

Scan QR codes from a camera or screenshot, and generate your own.

Decoder is a GNOME desktop utility for reading and creating QR codes. It can scan a camera feed or a screenshot and interpret supported types of encoded content.

The application is written in Rust with GTK4 and libadwaita. Its source uses the qrcode crate for generation and rqrr for recognition, with SQLite-backed history.