Photograph Tools for Applications
A photograph is the file most often rejected, usually for size or format rather than for how it looks. These tools fix the parts a portal actually checks.
A photograph inside a KB range
When the notice gives both a minimum and a maximum, aim for the middle of the window so a small rounding difference does not fail the upload.
A single maximum size
If only a ceiling is given, the general image tools are the fastest route.
Photograph plus signature
Most forms ask for both, with different limits for each. Prepare the photograph first, then the signature.