Free tools
QR code print-size checker
How small can you print a QR code and still have it scan? Tell us what it says and how far away people will scan it.
No account, and nothing you type is sent anywhere: the code is drawn in your browser.
Your code
The verdict
Type what the code says to see its size.
Strong contrast. Dark squares on a light background, as phone cameras expect.
Where the numbers come from
- Size: a phone camera needs each square to be about one hundredth of the scanning distance, so 1 mm squares at 10 cm. It is a field rule, the same one our designer coaches with.
- Blank space: ISO/IEC 18004 asks for four squares of quiet zone on every side.
- Contrast: ISO/IEC 15415 grades print contrast by the gap between the lightest and darkest parts. We ask for grade B, because ink spreads and shop lights glare.