Turning a pile of photos into one document
This is the tidiest way to hand over a set of images as a single file: expense receipts for an accountant, phone photos of a signed form, scanned pages of an ID, or product shots for a listing. Instead of attaching a dozen loose pictures that arrive in random order, you send one PDF that opens the same way for everyone. It also standardizes odd image sizes onto uniform pages, so the result reads like a proper document rather than a scattered gallery, and it is easy to print as a booklet.