Most photo problems are easier to prevent than to repair. The capture conditions matter long before the crop is opened in an editor.
Start with the least invasive fix
If the file size is wrong, compress it; if the crop is wrong, recrop it. Retake the portrait only when the source itself cannot meet the requirement.
Keep a copy of the version that failed
When troubleshooting, do not overwrite the previous file immediately. A simple filename such as passport-original.jpg, passport-size-fixed.jpg and passport-upload-version.jpg makes the workflow auditable and prevents accidental loss of the original.
The last useful inspection
Look at the eyes, face edges and background at full size, then inspect the file properties. A final ten-second review is often enough to catch a crop or compression mistake before the portal sees it.
The practical risk
Document photos are easy to underestimate because the final file is small. In practice, the receiving system can enforce precise dimensions or upload limits that a normal portrait does not meet automatically.
The part worth saving
Keep the working files separate: original capture, clean master and application-ready copy. Naming those three versions prevents accidental reuse of a compressed or incorrectly sized file.
Common Visa Photo Rejection Reasons
Keep the original safe and use the Studio to generate separate versions for different applications or print formats.