Compare PDFs
Check two versions of a contract, report or form side by side — every added and removed word highlighted, and visual differences on each page. Runs in your browser; nothing is uploaded.
At a glance
- Text changes compares the two PDFs word by word: added words are green, removed words are red and struck through.
- A summary shows the number of changes, words added and removed, how much text is unchanged and which pages changed.
- Show only changes folds unchanged text away, and you can jump from one change to the next.
- Visual compares pages pixel by pixel to catch changes in layout, images, stamps, signatures and scanned pages, in Side by side or Overlay view.
- Every page pair is checked quickly so pages that look different are marked; pages can be paired by hand when one was added or removed.
- Save the text comparison as a self-contained HTML report to share or keep.
- Runs entirely in your browser with PDF.js — neither file is uploaded.
Step by step
How to compare two PDF files
- 1
Add both PDFs
Drop the Original in the first box and the Changed version in the second — or drop both at once.
- 2
Read the text changes
Green words were added and red ones removed. Use the arrows to go from one change to the next.
- 3
Check the pages
Open Visual to see the pages side by side or overlaid, with changed areas tinted.
- 4
Save a report
Click Download report to keep the highlighted text differences as an HTML file.
Features
Everything you need, nothing you don’t
Review contracts
See exactly what the other side changed in a rent agreement, offer letter or vendor contract before you sign it.
Word-level detail
A changed amount, date or name is highlighted on its own, not the whole paragraph, so small edits don’t slip past.
Catch visual edits
The Visual view finds changes the text can’t show — a moved logo, a different stamp, a new signature or edits in a scanned page.
Jump between changes
Step through a long document change by change, with the page number of each one.
Shareable report
Download the highlighted differences as one HTML file that opens in any browser.
Private
Confidential drafts stay on your device. No upload, no sign-up and no limits.
Text or visual comparison?
| Text changes | Visual | |
|---|---|---|
| Finds | Added, removed and replaced words | Anything that looks different |
| Works on scanned PDFs | No — needs selectable text | Yes |
| Ignores reflowed text | Yes — compares words, not positions | No — moved text shows as changed |
| Best for | Contracts, reports, policies | Drawings, forms, letterheads, scans |
Good to know
The text comparison looks at words, not fonts or colours, so a change only to bold, size or colour shows up in the Visual view instead.
If a page was inserted, later pages in the Visual view are paired with the wrong page. Choose the matching pages from the Original and Changed lists to line them up again; the text comparison isn’t affected.
Need to fix the order of pages before comparing? Use the PDF Page Organizer.
FAQ
Frequently asked questions
How do I compare two PDF files for differences?
Can it compare scanned PDFs?
Does it work with Hindi and other languages?
Can I compare PDFs with a different number of pages?
Are my files uploaded?
Is there a file size or page limit?
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