Compare PDFs
Compare two PDF files and find differences
What is Compare PDFs?
PDF Compare takes two PDF documents and highlights the differences between them — showing added, removed, or modified text and layout changes side by side.
When to use this tool
- Comparing different versions of a contract
- Identifying changes between draft and final document
- Verifying that edits were applied correctly
- Reviewing revisions in legal or business documents
How it works
Renders both PDFs page by page using pdf.js, extracts text content from each, and performs a structural diff. Differences are highlighted with additions in green and deletions in red, presented side by side.
Security Guidelines
- Both PDFs are processed locally — no content is uploaded
- Comparison is text-based — visual layout changes may not be captured
Examples
About Compare PDFs
Compare two PDF files and find differences It runs entirely in your browser — no files are uploaded to any server, ensuring complete privacy and instant results.
- •Merge, split, and rotate PDF pages
- •Add watermarks and page numbers
- •Convert PDFs to text or Markdown
- •Sign and protect PDFs with passwords
Last updated: 2025-01-15
FAQ
Compare two PDF files and find differences
Yes, completely free. No signup required.
Yes. Runs entirely in your browser, no files uploaded.
Yes, works on any device with a modern browser.
No, everything runs in your browser.