Free PDF tool
Compare two PDF files online
Compare PDF overlays two documents and highlights what changed. Red shows content only in the second file and green shows content only in the first. A summary lists the pages that differ.
How to use it
- Choose the original PDF and then the changed version.
- Browse pages, switching between differences and side-by-side views.
- Download a report of the pages that differ.
What you get
- Visual difference view and side-by-side view.
- Summary of changed pages.
- Downloadable difference report.
Private by design
Everything happens inside your web browser. Your files are not uploaded, there is no account to create, and nothing is stored after you close the tab. The tool is free, with no watermark and no daily limit.
Frequently asked questions
Does it compare text or appearance?
It compares how pages look, so layout changes are caught as well as text edits.
Can the files have different page counts?
Yes. Extra pages are shown as completely different.