QR code not scanning? Try these checks
Most reading problems come down to image quality, distance, contrast, cropping, or content that does not match the intended format.
Improve the view
Hold the camera steady and give it enough light. Clean the lens, keep the entire QR symbol in frame, and avoid strong glare, reflections, or motion blur. If scanning a screen, raise brightness and reduce reflections.
For an image, use the original or a higher-resolution copy. A screenshot that crops the code’s edge or removes its clear border can make detection harder.
Check contrast and clear space
Use a dark code on a light background. Keep text, borders, graphics, and nearby codes out of the blank margin around the symbol. DENSO WAVE specifies a four-module quiet zone on every side for a QR Code.
If the QR content is long, its pattern becomes denser. Increase the printed symbol size where possible, or shorten the encoded text.
Test the real output
Scan the exported file and then a print at its final size using more than one compatible reader. Do not rely on a single desktop preview. If the QR code contains a Wi-Fi network or structured data, confirm that the content and encoding are supported by the device that will use it.