The four standard QR code error correction levels, defined by the ISO 18004 standard. For how to generate and use a QR code, see How to Generate and Use a QR Code.
| Level | Approximate Damage Tolerance |
|---|---|
| L (Low) | ≈7% |
| M (Medium) | ≈15% |
| Q (Quartile) | ≈25% |
| H (High) | ≈30% |
The QR Code Generator generates QR codes with adjustable error correction levels instantly.
QR Code Generator
Higher levels tolerate more damage or obstruction, like a logo overlay, but produce a visually denser code. L works fine for clean digital use; H is safer for print or when adding a logo.
It makes the code denser, which can make it slightly harder to scan at very small sizes, but far more resistant to damage or partial obstruction.
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