PDF Compare
Spot differences between PDFs
Free forever — no sign-up, nothing uploaded. Files never leave your device.
PDF Compare
Spot differences between PDFs
Drop your file here
or browse from your device
Browse filesdocument.pdf
1.2 MB
report.pdf
860 KB
100% private
Nothing is uploaded — everything runs in your browser.
Free forever
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Local processing
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About this tool
Upload two PDFs and get a page-by-page pixel diff with changed regions highlighted in red.
PDF Compare is a side-by-side document comparison tool that highlights the differences between two PDF files. Essential for legal professionals reviewing contract revisions, editors checking document changes, or anyone who needs to identify what's different between two versions of a PDF, this tool provides a clear, visual diff that shows additions, deletions, and modifications between documents.
The tool performs a detailed comparison of both text content and visual layout, presenting changes in an easy-to-read format with highlighted differences. Whether you're verifying that only intended changes were made, checking for unauthorized modifications, or simply need to see what changed between document versions, PDF Compare delivers accurate, comprehensive results entirely within your browser. No sensitive documents are ever uploaded to external servers.
Key features
Everything you get with PDF Compare — no premium upsell.
Compare two PDFs and highlight all differences
Detect text changes: additions, deletions, and modifications
Visual layout comparison for formatting changes
Side-by-side and overlay comparison views
Generate a summary report of all changes found
100% client-side comparison with no file uploads
How to use PDF Compare
Follow the steps below to use the tool.
- 1
Upload Original PDF
Drag and drop the original or base version of your PDF document.
- 2
Upload Modified PDF
Upload the second version of the PDF that you want to compare against the original.
- 3
Run Comparison
Click compare to analyze both documents and identify all differences.
- 4
Review Changes
Examine the highlighted differences in the side-by-side comparison view.
Still free, still private — your files never leave your device.
Launch PDF CompareFrequently asked questions
Quick answers before you launch the tool.
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