Compare two PDFs privately
See exactly which words changed between two versions of a contract, report, or draft.
How to compare two PDFs
Choose the original PDF.
Choose the changed version.
Review the highlighted changes and copy the report if you need it.
Frequently asked questions
What is compared?
The text, line by line, with changed words highlighted. Images and layout changes aren’t shown.
Can it compare scanned documents?
No. Scanned pages contain pictures of text, so there’s no text to compare.
Are my files uploaded?
No. The PDF is read and changed by code running in this browser tab. The tools page blocks network connections for file processing, so the document, its pages, and any password you type stay on your device.
How large can the PDF be?
Up to 150 MB per file, 300 MB in total when you work with several files, and 500 pages. Very large or complex documents also depend on your device’s memory.
Is it free?
Yes. The PDF tools are free to use, need no account, and add no watermark.