For reliable scans
If the background is busy, raise the overlay a little and keep error correction on H.
Create art QR
Layer scannable QR modules over any image, then tune colors and size. Everything runs in your browser.
URLs, text, contact info — anything works.
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Images and text are never sent to a server. This site is static hosting only.
Small dots matter
Lower the small-dot ratio to let more of the background show through.
When printing
Increase box size and pick high-contrast colors for stable results.