Compare PDF FilesOnline for Free
Upload two versions of a document and see exactly which words were added or removed, page by page.
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About this tool
Compare PDF Online
Compare PDF finds the text differences between two versions of a document. Upload the original and the revised file, and every page is compared word by word, with removed words shown in red strikethrough and added words in green.
It is a quick way to check what changed between two drafts of a contract, lease or policy, review edits a colleague made to a report, spot changes in updated terms and conditions, or proofread a new version of a CV. A summary shows how many words were added and removed, and pages without changes are collapsed so you can focus on what's different.
The comparison looks at text only, not fonts, images or layout, and scanned PDFs need OCR first to have text to compare. Both files are read and compared in your browser, so confidential documents are never uploaded.
Word-by-word diff
Every page is compared at word level, so even small edits are caught.
Colour-coded changes
Removed text is struck through in red and added text is highlighted in green.
Change summary
See the total words added and removed, with unchanged pages collapsed.
Handles extra pages
Pages missing from either version are shown as fully added or removed.
Step by step
How to compare two PDFs
- 1
Upload both versions
Add the original PDF on the left and the changed PDF on the right.
- 2
Compare
Click Compare PDFs. The text of both files is read and compared page by page.
- 3
Review the changes
Removed words are shown in red strikethrough and added words in green. Pages without changes are collapsed.