Compare PDF Files Free Online — Find the Differences

Compare two PDF documents online side-by-side with synchronized scrolling to quickly identify what changed between versions. Perfect for comparing contract revisions, legal document drafts, report versions, or any document where you need to identify differences between two iterations. No files are uploaded — both PDFs are rendered locally in your browser.

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or click to browse · max 150 MB

✓ No upload✓ No watermark✓ No sign-up

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1Twin panesBoth documents display in a synchronized two-panel view.
2Sync scrollScroll either panel — the other follows so pages stay aligned.
3100% PrivateComparison runs fully local — both files stay on your device.

Spot what changed between two PDFs

Add the before file first and the after file second. You get a JSON report naming every changed, added and removed page with before-and-after excerpts.

Private by design

Both versions are read side by side on this device with nothing sent out. Legal drafts and signed revisions stay local while differences surface.

How to compare PDF Files Free Online — Find the Differences

  1. 1Upload both PDFsUpload your two PDF versions — original and revised.
  2. 2View side by sideBoth documents display in a synchronized two-panel view.
  3. 3Scroll to compareScroll either panel — the other follows in sync so pages stay aligned for comparison.
  4. 4Identify changesVisually scan corresponding pages to spot additions, deletions, or formatting changes.
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Frequently asked questions

Text diff or visual diff?

Both — a page-level map of changes plus highlighted text differences within changed pages.

Can it compare different page counts?

Yes — added and removed pages are reported explicitly.

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