Compare PDF
Spot the text differences between two PDFs.
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PDF · APPLICATION/PDF
Compare PDF — Free Online Converter
Upload the original and the revised version of a document and get back a colour-coded report, additions in green and deletions in red, so you can spot every edit without reading both files side by side.
How to compare two PDFs in 3 steps
- 1Upload two PDFs — the original first, then the revised version.
- 2We compare the text of both files line by line.
- 3Download a colour-coded PDF report of everything that changed.
Frequently asked questions
Which file should I upload first?
Upload the original version first and the revised version second. Lines only in the original show as deletions (red); lines only in the revised file show as additions (green).
Does it compare images and formatting too?
This tool compares the text content of the two PDFs. Changes to images, fonts, or exact positioning aren't flagged — it focuses on what the words say.
Is Compare PDF really free?
Yes — Compare PDF is 100% free. There's no account to create, no subscription, no trial, and no daily limit. Convert as many files as you like.
Are my files safe and private?
Your files are processed in memory and never stored on our servers. Any temporary files are deleted automatically right after processing finishes.