Tessera

Tessera generates digital mosaics (QR codes) from any text or URL, with full control over how they look and where they end up.

Features:

• Live preview as you type
• Custom foreground color, with a warning if contrast is too low to scan reliably
• Four error correction levels (Low, Medium, High, Quartile)
• Export as PNG or SVG
• Copy to clipboard from the menu or with a single click on the mosaic
• Persistent preferences for default color and error correction level