Compare PDFs visually
Find changes in two PDFs by comparing rendered pages and highlighting changed pixels.
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Keep this page handy for next time.
- On a computer
- Press Ctrl + D, or Command + D on a Mac.
- On a phone or tablet
- Open your browser's menu or Share menu and look for Add Bookmark, Bookmark or Add to favourites.
A bookmark saves the page link. Save any tool results separately.
Processed on your device
How to use this tool
- Choose the local files you want to use for compare pdfs visually.
- Adjust the labelled settings, then run the tool. Find changes in two PDFs by comparing rendered pages and highlighting changed pixels.
- Review the result before copying or downloading it. Clear the tool when finished.
Things to know
- Maximum 50 MiB per PDF, 100 MiB combined and 500 pages. Encrypted documents are unsupported. Page composition preserves visible page content, not document-level forms, bookmarks or attachments. Newly added text uses standard Latin PDF fonts. PDF objects, final PDF output, ZIP exports and rasterized compression candidates are limited to 64 MiB before final packaging. Text extraction is limited to 4 MiB of characters. Editing and attachment extraction limit decoded streams to 32 MiB each, 128 MiB combined, 100000 objects, one million parsed values and 128 nesting levels.
- Up to 30 pages per PDF. Requires equal page counts and matching page sizes; no automatic page alignment. Returns a report and red highlights for changed pages. Pixel comparisons do not assess meaning or hidden content.
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