Compare PDFs
Compare two PDF documents side by side. Spot differences between versions instantly.
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What is Compare PDFs?
Compare two PDF files side-by-side with visual highlighting of differences. This free online tool helps you spot changes, verify versions, or audit document modifications across any two PDFs.
Why use this tool?
Side-by-side page comparison with visual highlighting of text and image differences. Jump to specific differences with one click. Download a marked-up comparison report. Free, browser-based, no upload to servers.
Common use cases
Use this tool when comparing PDF versions to find edits, checking contract revisions before signing, verifying document changes, comparing form submissions, or auditing document modifications.
How to use Compare PDFs
- 1Upload the first PDF (original version)
- 2Upload the second PDF (revised version)
- 3Select pages to compare or compare all pages
- 4Review highlighted differences side-by-side
- 5Download the comparison report
Frequently asked questions
How are differences highlighted?
Text additions are highlighted in green, deletions in red, and modifications in blue. Image differences are outlined.
Can I compare more than two PDFs?
The tool compares two PDFs at a time. For multiple comparisons, process pairs sequentially.
Will it detect formatting changes?
Yes, text changes, layout modifications, image updates, and color changes are all detected and highlighted.
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