JPG to PDF

Why put images in a PDF at all?

A PDF is the closest thing the world has to a universal document. When you need to send a batch of photos — scanned receipts for an expense claim, pages of a handwritten document, ID photos for an application, or a portfolio for a client — sending twenty loose JPGs is awkward. They arrive out of order, they can be opened in twenty different apps, and recipients on phones have to tap each one individually. A single PDF preserves the order you chose, opens identically on every device, prints predictably, and travels as one attachment. Most institutional upload forms — universities, visa portals, banks, insurers — accept a PDF and nothing else, which is often the real reason people need this conversion.

Choosing the right page size and margin

A4 is the standard almost everywhere outside North America; Letter is the US and Canadian equivalent and is very slightly wider and shorter. If the PDF is destined for an official form, match whatever the institution expects — a mismatch usually just means a slightly odd margin when printed, but some strict systems will reject it. Margins matter more than people expect: choose 'None' when the image itself is the document (a scanned page, a photo you want edge to edge), and 'Normal' or 'Wide' when you want the page to look like a document with the photo placed on it. If your images have important detail near the edges, avoid tight margins so nothing gets visually cramped against the page border.