Compare PDFs
Compare two PDF files page by page and see the differences highlighted, in your browser.
Drop a file here, or click to chooseYou can also click this area and paste a copied file.
Processed in your browser. Your file is never uploaded.
Drop a file here, or click to chooseYou can also click this area and paste a copied file.
Processed in your browser. Your file is never uploaded.
About this tool
Check what changed between two versions of a document. Choose the original and the changed PDF, and the tool shows each page with the differences painted in red, or both pages side by side. A summary can list which pages differ. Both files stay on your device.
How to use it
- Choose the original PDF (A) and the changed PDF (B).
- Use the arrows to move between pages and pick a view.
- Click Check every page for a summary of which pages differ.
Frequently asked questions
Are my PDFs uploaded?
No. Both files are compared in your browser.
How does it find differences?
Each page is rendered to an image and compared pixel by pixel, so it detects visible changes in text, images and layout.
Why do identical-looking pages show tiny differences?
Small shifts or different fonts change pixels. The percentage tells you how big the change is.