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This site is run by one person. Write about anything on it — a code that will not scan, a field that rejects input it should accept, or a QR type you need and cannot find here.

A code that will not scan

Almost every scanning problem comes down to the reader, the size or the contrast rather than the code itself, so a report is easiest to act on when it says:

• Which generator you used — Wi-Fi, vCard, plain text, email, SMS, phone, logo or SVG — and what the scanner did: nothing at all, a wrong result, or an error.
• The phone and the app doing the scanning. A built-in camera app, a banking app and a dedicated scanner do not accept the same things; Wi-Fi codes in particular are read by the camera on some phones and by nothing at all on others.
• How the code was displayed and how big. A code printed under about 2 cm, shown on a dim screen, or placed on a patterned background fails in a way the file itself cannot explain.

Do not paste the contents of a private code — a Wi-Fi password, a personal number — into the message. Describing the type and the length is enough.

What happens to a report

The generator encodes to the same specification every scanner reads, so a fix is usually either in how a field is escaped before encoding or in the error-correction level for the logo overlay. Both are in the code and both get corrected there, then checked against a real phone rather than a screenshot. A change is not made on the strength of one report alone.

What happens to your message

The form is relayed by Web3Forms to the operator's inbox. Your email address is used to reply and nothing else — there is no mailing list, and it is not passed on. The privacy policy has the detail.

Operated by: Soohoon Lee · Privacy Policy