My QR code doesn't scan or opens the wrong thing
Print size, contrast, damage, and checking what a scan is set to do.
It doesn't scan
- Too small or too far: print at least 2 x 2 cm; bigger for posters.
- Contrast: dark dots on a light background. Light-on-dark or busy photos behind the code often fail.
- Margin: keep white space around the code.
- Damage (stickers, tables): download it again with error correction Q or H. See Download and print.
- Glossy or curved surfaces: try a matte print.
It opens the wrong thing
A scan does what QR code & short link > What a scan opens is set to. Check that setting (and for a scheduled redirect, its dates). Make sure you printed this site's Permanent QR code, not an older file or another site's.
"Not found"
The site may be unpublished or deleted. Publish it again under its Overview.