What changes when a PDF becomes a JPG

2026-09-29

A PDF is a document: text, fonts, links, form fields, bookmarks and more, arranged on pages. A JPG is an image: a grid of coloured pixels. Each selected page is rendered as an image at the resolution you choose — the visible content becomes pixels, and the document’s working parts stay behind.

What ends up in the image

• The page’s visible content, rasterised at the resolution you chose: text, images and drawings, filled-in text fields with the values you can see, and the visible mark of a signature where the PDF draws one.
• The page’s own crop and rotation, as a PDF viewer would show them.

The result depends on how the page is rendered: fonts, fine lines and the chosen resolution all affect how close it looks to what you see in a PDF viewer, and it is not a pixel-for-pixel copy of any particular viewer’s display. Areas without a background come out white, because JPG has no transparency.

What stays behind

• Selectable and searchable text. Words become pixels. You can no longer copy them, search them or have them read aloud from the file itself. PDF to JPG does not run text recognition (OCR).
• Working links. A link may still look like a link, but it goes nowhere.
• Interactive form fields. Values you can see are drawn into the image; the fields themselves can no longer be filled or edited.
• Document-level structure, such as bookmarks, attachments, metadata, layers and the tag structure that screen readers rely on.

Signatures and certification

If a PDF is digitally signed, the visible mark of the signature can appear in the image, but its validity does not travel with it — a JPG cannot carry a cryptographic signature. PDF to JPG shows a short note when you open a signed or certified document. If the signature matters, share the original PDF.

If you rely on accessible PDFs

Tagged PDFs carry reading order and structure for screen readers; an image carries none of that. If you or the people you share with use assistive technology, keep and share the original PDF alongside, or instead of, the images.

Keep the original

The conversion does not change your PDF — it is only read. Keep it: it is the version with the text, links and structure intact, and you can make new images from it at a different resolution whenever you need them.