Check contract revisions
Compare the original and revised contract versions to confirm what changed before signing.
⚙️ Advanced PDF
⚖️ Compare PDF
Compare two PDFs side by side or with a visual diff.
Compare PDF renders two PDF documents and shows them side by side, or creates a visual difference PDF that highlights changed pixels in red. It is a fast way to spot version changes without leaving your browser.
Drop PDF files here
or click to browse · Up to 2 files · 80 MB max
Choose a file to begin.
How to use Compare PDF
- Upload the original and revised PDFs.
- Choose Side by side or Visual diff.
- Click Compare PDF.
- Download the comparison document.
Features
- Side-by-side page comparison
- Visual pixel diff with red highlights
- Rendered locally with PDF.js
- PDF output for sharing
Examples
Review design updates
Diff a previous brochure export against the new export to catch layout shifts.
Frequently asked questions
Upload two PDF files. The first becomes the original and the second becomes the revised version.
Changed pixels are highlighted in red on a combined page, making differences easier to spot.
The tool compares the first matching pages of both files. Very large documents may take longer to render.