( ? ) About
Use this tool to make QR codes.

The Reliability slider adjusts how resistant to physical damage the QR code will be, by specifying the "redundancy" or "error correction" level.
A higher value may be useful for cases where a printed QR code might get obstructed or worn down over time. Lower values will produce simpler-looking QR codes, especially when the content is long.

There are four redundancy levels:
L (Low) Resistant to  7% data loss
M (Medium) Resistant to 15% data loss
Q (Quartile) Resistant to 25% data loss
H (High) Resistant to 30% data loss

Visit Wikipedia/QR_code for more info on error correction.

This interface uses avin/sexy-qr to generate its QR codes. Thanks avin!
L/M/Q/H
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