What we measure
Detection, decode success, image size, contrast, quiet zone, center obstruction heuristics, and URL format checks — all from the image in your browser.
Free · Private · No signup
QR Code Tester
Test your QR code for readability, contrast, size, and scanability before printing.
QR Code Tester
Your image is processed in your browser and is not uploaded.
Why test a QR code before printing?
A QR code may look fine on screen but fail in the real world because of low contrast, missing quiet zone, heavy compression, or a logo that covers too many modules. Testing locally helps you catch problems before you print hundreds of labels or posters. Need a new QR code? Create one with our QR Code Generator.
What we do not guess
Error correction level and remote URL uptime cannot always be verified from a static image alone. We report only what the image and browser can support honestly.
Related QR Tools
Need a new QR code? Create one with our QR Code Generator.