Compare two PDFs

Spot what changed between two versions of a document: pages are paired up and pixel-compared, changed regions are tinted on a side-by-side view, and a page map shows exactly which pages differ.

Contract versions are precisely the documents you shouldn't upload to a diff site — this one runs entirely on your device.

Spot what changed between versions

Pages are paired up and pixel-compared, changed regions are tinted on a side-by-side view, and a page map shows exactly which pages differ. Contract versions are precisely the documents you should not upload to a diff site — this one runs entirely on your device.

Catch the change you would miss

Two versions of a contract or a design can differ by a single clause or a moved figure that is almost impossible to spot by eye. A visual diff tints exactly what changed and lists which pages differ, so a quiet edit buried on page nine does not slip past — all without uploading either confidential draft.

How it works

1. Drop the first PDF, then choose Compare in the rail.
2. Pick the second file.
3. Review the change map and tinted overlays.

Like every pixelpix tool, this runs 100% in your browser: your file is never uploaded to a server, never leaves your device, and works even offline once the page has loaded.

Frequently asked questions

How does the comparison work?

It pairs pages by position, renders each pair, and highlights the regions that differ, with an overview map of which pages changed.

Can it compare documents with different page counts?

It pairs pages by position and reports extra pages as only-in-one-file, rather than guessing an alignment that could mislead.

Are both documents uploaded?

No. Both files are compared locally in your browser; nothing is sent anywhere.

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