Compare PDF
Compare two PDF files and highlight differences.
Frequently Asked Questions
How does the PDF comparison tool highlight changes?
PDFtiny uses dual-layer comparison: visual raster pixel diffing and text stream diffing. Inserted text is highlighted in green, deleted sections in red, and layout shifts in blue.
Can I compare contracts with different page counts?
Yes, the engine synchronizes matching pages and flags inserted, omitted, or rearranged pages between document revisions.
Can I export a comparison report?
Yes, you can download a consolidated summary PDF showing side-by-side revision markups and a change log.
Are legal agreements safe to compare here?
Absolutely. Because processing is 100% client-side, sensitive contracts, NDAs, and corporate agreements remain strictly private on your device.