Can I compare scanned PDFs?

Only if they have been OCR-processed first.

Is the comparison page-by-page?

Yes — each page pair is compared and differences are shown inline.

Compare two PDF versions and highlight all text and layout differences. The safest way to process sensitive data with zero-up

Your files never leave your device. Processed locally. 100% private.

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Complete your task perfectly in just three straightforward steps.

Upload the original and the revised PDF side by side.

Differences are highlighted: additions in green, deletions in red.

Download a diff report or an annotated PDF with changes marked.

Everything you need to know about the PDF Compare.

What types of differences are detected?

Text changes, added/removed pages, and image replacements.

Is my file uploaded?

No. Everything runs locally in your browser.

What is the file size limit?

Process files up to the browser memory limit.

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