QR Code Generator
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What is a QR Code?
A QR code (Quick Response Code) is a 2D barcode that, when scanned, instantly opens stored URLs, text, and contacts. Used in business cards, product packaging, payment systems, and more.
Error Correction Levels
Error correction allows a QR code to be read even if partially damaged. L(7%), M(15%), Q(25%), H(30%) indicate recovery capacity. Use H when overlaying a logo on the QR code.
Error Correction Level Guide
L0% loss OK
M6% loss OK
Q13% loss OK
H20% loss OK
| Level | Recovery | Best For |
|---|---|---|
| L | 7 % | Clean flat surfaces — digital screens, print in controlled environments |
| M | 15 % | General use — URLs, business cards, posters (default) |
| Q | 25 % | Outdoor signs, product packaging, worn surfaces |
| H | 30 % | Logo overlay on QR, harsh industrial environments |