Forms and applications often want a PDF, not loose photos. Here is how to make one.
Use daylight, keep the page flat and fill the frame. Straight, sharp photos give a readable PDF.
Add the pictures to the converter in page order and download a single PDF. Use the multi-image tool when you have several pages.
Large photos make heavy PDFs, so reduce them if an upload has a size limit. Photos can also carry location data, so clean them first if you share them widely.