Guides
Short answers to the problems that stop an upload form from taking your file.
- KB, pixels and DPI, explainedWhat each number on a form means, with a cm to pixels table.
- Why is my file too large?Why phone photos are heavy, and the safe way to shrink them.
- JPG, JPEG, PNG and HEICWhich file type a form wants, and what to do with iPhone photos.
- Passport photo at homeLight, distance and background, so the photo is not rejected.
- Scan documents with a phoneA sharp, flat, small scan without a scanner.
- Sign a PDF without printingDraw your signature and place it on the page.
- Share an ID card copy safelyMark it, hide what is not needed, and send less.
- ID card front and back on one pageBoth sides in one image or PDF, the way forms ask.
- Photo and signature for online formsPrepare both files once, in the order that avoids rejections.