Compare two PDF files
Spot changes between two versions of a contract or report, without uploading either.
- Your files are never uploaded
- Processed on your device
- Works offline
- Free, no sign-up
Drop your PDF files here
Two PDF files: old and new · up to 2 files, 500 MB each
or paste with Ctrl+VDrag rows or use the arrows to set the order.
Live preview
Settings
Add the old version first and the new version second.
Nothing is uploadedHow it works
Add two PDFs
The old version first, then the new one.
Compare
Pages are compared one by one.
Review
Red marks what was removed, green what was added.
Visual comparison
Both PDFs are drawn page by page, and every difference is marked: red for parts only in the first PDF and green for parts only in the second. Unchanged parts are shown faded.
Pages are compared at the same position, so if text moves to the next page, the rest of the pages also show changes.
Private
Your file is processed inside your browser with PDF.js (Apache-2.0) and pdf-lib. It is never uploaded, and nothing is saved after you close the page.
Questions
Are my files uploaded?
No. The tool runs inside your browser, so your files are opened and changed on your own device. They are never sent to us or to anyone else.
Are confidential contracts safe?
Yes. Both files are compared in your browser and never uploaded.
Is it free?
Yes. Free to use, with no sign-up, no watermark and no daily limits.
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