QR Code Generator
Content
19 / 213 bytes(V2)Quick Presets
Size
300px100px500px
Error Correction
Colors
Preview
Version 2 (25x25)How It Works
Zero Dependencies
Full QR encoder built from scratch with GF(256) arithmetic and Reed-Solomon error correction.
Client-Side Only
All encoding happens in your browser. No data is sent to any server.
Scannable Output
Generates real, standards-compliant QR codes with proper finder patterns, masking, and EC.
Capacity Reference
| Version | L | M | Q | H |
|---|---|---|---|---|
| V1 (21x21) | 17 | 14 | 11 | 7 |
| V2 (25x25) | 32 | 26 | 20 | 14 |
| V3 (29x29) | 53 | 42 | 32 | 24 |
| V4 (33x33) | 78 | 62 | 46 | 34 |
| V5 (37x37) | 106 | 84 | 60 | 44 |
| V6 (41x41) | 134 | 106 | 74 | 58 |
| V7 (45x45) | 154 | 122 | 86 | 64 |
| V8 (49x49) | 192 | 152 | 108 | 84 |
| V9 (53x53) | 230 | 180 | 130 | 98 |
| V10 (57x57) | 271 | 213 | 151 | 119 |
Capacity in bytes (byte mode encoding)
This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.