QR codes for text, URLs, WiFi and vCards, with custom colours, a logo and PNG / SVG export
Type something to generate a QR code
Everything runs in your browser. Margin is measured in modules — 2 to 4 is usually right.
Up to 7,089 digits or 4,296 alphanumeric characters at version 40 with the lowest error correction. More data means denser modules and harder scanning — keep payloads short.
L/M/Q/H recover roughly 7/15/25/30% damage. Pick H when overlaying a logo so the covered centre can still be recovered from the redundancy.