Local-first • No server upload
PDF

PDF Comparison

Compare two local PDF versions side by side with synchronized page navigation. — 100% browser-side, no server upload, works offline.

PDF comparison utility

Compare two PDFs side by side

Runs locally

Open two local PDF versions, move through the same page number, and inspect each document with independent zoom controls.

Original

Choose a PDF

Drop PDF files here

or choose files from your device

Choose a PDF to compare.

Revision

Choose a PDF

Drop PDF files here

or choose files from your device

Choose a PDF to compare.

Both PDFs stay on this device. Rendering, page navigation, and comparison previews run locally without uploading document content or sending it to analytics.

Common questions

Are either PDFs uploaded?

No. Both documents stay in this browser while pages are rendered locally.

Can I compare text changes automatically?

No. This first comparison workflow is visual; a later text-layer diff can build on the same local rendering boundary.

Can the PDFs have different page counts?

Yes. Shared page navigation continues across the longer document and clearly shows when the other side has no page.

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