Compare PDF
Free online tool to compare pdf securely and instantly.
Compare PDF
Compare two PDF documents side-by-side and highlight text differences.
Original PDF
Upload Original
Revised PDF
Upload Revision
Your Privacy & Data is 100% Safe
Your Privacy & Data is 100% Safe
All uploaded documents and input details are processed entirely within your browser. We do not store, copy, or transmit any of your data to our servers. Your information remains strictly confidential and secure.
Free Online PDF Comparison Tool — Find Differences in PDFs
If you are reviewing legal contracts, code specifications, or edited manuscripts, manually reading two documents side-by-side to find changes is incredibly tedious. Our Compare PDF tool automates this by analyzing the text layers of both documents and highlighting exactly what was added, deleted, or modified.
How to Compare PDFs
- Upload the Original: Add the older baseline version of your document to the left upload box.
- Upload the Revision: Add the newer, edited version to the right upload box.
- Compare: Click Compare Documents. The engine will generate a Diff Report — a new PDF that highlights deleted text in red and newly added text in green.
Perfect for Legal and Publishing Workflows
Lawyers frequently use "redline" comparisons to track changes in agreements between counterparties. This tool brings enterprise-grade document comparison directly to your browser, without requiring expensive enterprise PDF software.