Does it compare visual layout?

It compares extracted text, which catches wording changes; it does not diff visual styling.

Does it work on scanned PDFs?

No — scanned PDFs have no selectable text. OCR them first.

Are my files uploaded?

No — both PDFs are compared locally in your browser.

All Tools›PDF Tools›

Compare PDF

Free · No Server

Compare two PDFs and highlight added and removed text side-by-side — 100% in-browser, no upload.

Compare PDF (text)

Original

Drop the first PDF

Changed

Drop the second PDF

100% in-browser — your PDFs never leave your device. Compares extracted text; works on text-based (not scanned) PDFs.

What is Compare Pdf?

Compare PDF extracts the text from two PDFs and highlights what was added and removed between them, with character-level statistics. The comparison runs entirely in your browser, so your documents are never uploaded.

How to Use

1
Upload both PDFs
Drop the original and the changed version.
2
Compare
Text is extracted from both and diffed.
3
Review changes
Added text is green, removed text is red with strikethrough.

Common Use Cases

Reviewing contract revisions
Checking document version changes
Spotting edits between drafts
Auditing report updates

Key Features

Word/character-level diff
Added/removed highlighting
Change statistics
100% client-side

🔒

100% Private — No Server Required

All processing happens directly in your browser. No data is uploaded, stored, or transmitted to any server.

Frequently Asked Questions

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Last reviewed on June 19, 2026 by the AiTechWorlds Tools Team. All processing runs locally in your browser.

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