How to Compare Two PDFs

Diff two PDFs side-by-side or by text layer — highlight added/removed pages and text changes for contract review.

2 min read · 2026-08-31

Steps

  1. Upload — Drag & drop to the tool.
  2. Configure — Set required options.
  3. Process & download — Run locally, then download.
Try it now — Compare PDF →

No sign-up, processed locally

Use cases

Diff two PDFs side-by-side or by text layer — highlight added/removed pages and text changes for contract review.

Work & Study

Diff two PDFs side-by-side or by text layer — highlight added/removed pages and text changes for contract review. Fits lectures, reports, assignments and batch conversions — fully offline, private.

Business & Legal

Contracts and invoices are processed locally with no upload, meeting compliance.

Design & Archive

Image-PDF and layout tasks preserve color/vectors for portfolios and print checks.

Tips & notes

  • Batch large files; keep each run <100MB to avoid memory spikes.
  • Page syntax supports commas & hyphens like “1,3,5-7”; out-of-range pages are ignored.
  • If the browser blocks multi-downloads, allow auto-downloads or click one by one.

الأسئلة الشائعة

Will files be uploaded? Is it safe?

How to Compare Two PDFs runs 100% locally via File API with no upload; memory clears when you close the tab.

What if processing fails?

Check for corruption, encryption/password, page range, then retry with a smaller file.

Can I chain with other tools?

Yes — organize/split first, then compress/convert, then protect/sign in a chain.

This guide reflects real tool capabilities and is reviewed regularly.