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Add QArt Tuner: QR code art generator with interactive web UI

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Single-file Go tool implementing the QArt technique (Russ Cox, 2012)
using only the public rsc.io/qr API. Generates QR codes whose data
modules form a recognizable image by exploiting error correction
freedom via GF(2) Gaussian elimination.

Includes a web UI with live-updating sliders for version, mask,
rotation, dx/dy offset, and scale. Keyboard shortcuts for rapid
iteration. Also works as a CLI for batch generation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Erich Blume 2026-03-27 15:33:36 -07:00
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Add QArt Tuner — a Go tool that generates QR codes whose data modules form a recognizable image, with an interactive web UI for parameter tuning. Based on the [QArt technique](https://research.swtch.com/qart) by Russ Cox. Lives in `utils/qart/`.