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Home / PDF / Compare PDF

Compare PDF

Compare two PDFs page by page and see where their pixels change.

Processed on this device. The content is not uploaded to a server.

Compare PDF

Learn with sample data. Your work in the tool is preserved while you view the example.

Example entry

a.pdf → b.pdf

How to use this tool

  1. Upload the original PDF and the new version.
  2. Press Compare PDF and navigate through the pages.
  3. Review the views and download the page difference map.

What you should know

Up to 25 MB per PDF and 20 pages per document. Visual comparison at common scale, up to 900 pixels wide and 2 megapixels. Mark size changes and missing pages. It does not compare semantics, metadata or signatures; fonts and antialiasing can produce differences.

Is my data sent to a server?

No. Processing occurs on this device. Review the scope and limits before using the result.

It can also help you

PDF editor

Add or replace text over an area, cover content, and sign with a per-page preview.

PDFLocal

Compare text

Find added, deleted and equal lines between two versions, with changes and download view.

DevelopmentLocal

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