These are the documents that you need to upload in your JEE Mains application:

1. Your recent photograph either in colour or black & white with 80% face but without mask and the face should ve visible including ears against white background.
2. Your Scanned photograph and signature should be in JPG or JPEG format. No Pdf format will be accepted.
3. Size of your scanned photograph should be between 10 kb to 200 kb.
4. Size of your scanned signature should be between 4 kb to 30 kb
5. Size of your scanned copy of category certificate only if applicable should be between 50 kb to 300 kb
6. Size of the scanned copy of PwD certificate if applicable  should be between 50 kb to 300 kb

You can change your Category in other sessions provided you have enough proof to validate it. But we are not sure what you meant by PWD Category. Can you please help us understand it?