100% free tool
Compare PDF
Spot what changed between two PDFs, page by page.
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- Instant results
- Nothing is uploaded
Original
or drop them here
Changed version
or drop them here
Shows what changed between two versions of a PDF. Each page is drawn from both files and compared pixel by pixel, with the differences painted in red over the newer version, so a moved paragraph or an edited figure is obvious at a glance. Pages that exist in only one of the two files are flagged separately. Unchanged pages are left out entirely, which is what makes a long document readable.
Frequently asked questions
Common questions about the compare pdf.
Does it compare the text or the appearance?+
The appearance. That catches everything a text comparison would miss - a changed logo, a shifted table, different spacing - at the cost of flagging a reflowed paragraph as changed even when the words are identical.
Why is a page shown as completely different?+
Either it exists in only one of the two files, or the layout shifted enough that almost nothing lines up - inserting a paragraph early in a document usually pushes every page after it.
Are both files uploaded?+
Neither. Both are rendered and compared in your browser, which matters when you are diffing two drafts of a contract.
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