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Why forms reject photos and signatures

Portals check size and format automatically, and staff reject unclear or wrong images later, sometimes after the exam. These are the common reasons, and how to fix each one.

ProblemFix
File too big or too small in KBYour exam’s photo or signature resizer keeps it inside the KB range.
Wrong pixel sizeSame resizers, or the image resizer for any size in px, cm or inches.
“Invalid format” although it ends in .jpgThe file is really PNG, WebP or HEIC: use the JPG fixer or the format converter.
Dark or busy backgroundRetake against a plain wall, or use the background changer. Check with the file checker.
Faint, blurred or tiny signatureSign larger with a dark pen and use the signature cleaner.
Name and date missing on the photo (where asked)Name and date on photo

Photo rules in the notices

Signature rules in the notices

Each rule is from the exam’s official notice; open the exam page for the source.