A contract revision
Two versions of a 5-page PDF with one paragraph reworded on page 3
Text mode: page 3 shown with the removed wording struck through and the new wording highlighted; pages 1, 2, 4 and 5 marked unchanged.
PDF Compare
Compare two PDFs page by page — see the exact text changes, or a highlighted visual diff.
Original PDF
Modified PDF
Files are processed entirely in your browser and never uploaded.
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About this tool
Two versions of the same document usually differ in ways worth seeing precisely — a clause reworded, a number updated, a page inserted. Text mode diffs the actual words page by page; visual mode renders both pages as images and highlights every pixel that changed, which catches layout and formatting differences text alone would miss (and is the only option for a page with no selectable text at all).
How to use it
- Upload the original and the modified PDF.
- Choose Text differences to see word-level changes per page, or Visual differences to see a rendered image with changes highlighted in red.
- Press Compare. In visual mode, navigate page by page — each page is rendered and diffed only when you view it.
Examples
Common problems
- Visual mode shows the whole page highlighted red, even for a tiny change.
- The two pages likely differ in size or the content shifted position (a paragraph added earlier in the page pushes everything after it down) — a pixel-by-pixel diff has no way to know that's the same content moved, only that a different pixel is there now. Text mode reads the actual words regardless of position and won't have this problem.