What this tool does
This tool renders both PDF files locally and compares their pixels. Content present only in Revision A appears red, content present only in Revision B appears blue and matching content appears black. Use the split slider or individual document views to investigate changes page by page.
Examples
PDF Revision A vs PDF Revision B
Red removed content, blue added content and black unchanged content
Frequently asked questions
What does it compare?
The comparison is visual and pixel-based, so it detects linework, text, images and other rendered page changes.
Are documents uploaded?
No. Both PDFs are rendered and compared locally in your browser.
What if page sizes differ?
For reliable alignment, compare PDFs exported at the same page size, orientation and origin. The tool pads smaller pages with white space.