JPG vs PDF: Which Should You Use?
Choose between JPG and PDF for photos, scans, applications, reports and multi-page documents.
JPG and PDF solve different problems. JPG is an image format; PDF is a document container designed to preserve page layout. The right choice depends on whether you are sharing a single image or a complete document.
Choose JPG for a single image
JPG is a practical format for photographs and other continuous-tone images. It is widely supported and can be compressed to small sizes.
Choose PDF for documents and multiple pages
PDF is usually the better fit for applications, reports and multi-page scans because pages stay together and the document can preserve text, images and layout in one file.
Check the portal requirement
Upload systems often specify accepted formats and size limits. Follow those requirements first, then optimize the file only as much as needed.