Compare Two PDFs — Show Text Differences
Quickly see what changed between two versions of a PDF. Perfect for contract revisions, policy updates and edited manuscripts.
Compare PDF
Show text differences between two PDFs (per page)
About the Compare PDF tool
The comparison tool extracts text from both PDFs and highlights insertions and deletions. Ideal for change-control on legal documents, policies and reports.
Everything runs in your browser, so confidential drafts never leave your machine.
Key features of Compare PDF
- Side-by-side text diff of two PDFs
- Highlights added and removed content
- Works with digital and OCR'd text
- Fully in-browser processing
- Free and unlimited
How to use Compare PDF
- Upload the original PDF.
- Upload the revised PDF.
- Click ‘Compare’ to view the diff.
Common use cases
- Track edits between contract versions
- Review policy or handbook updates
- Check pre- and post-editing manuscripts
- Verify translated document changes
- Audit compliance-document revisions
Frequently asked questions
Does it compare visual layout or just text?
The tool focuses on text differences, which covers most legal and business use cases. Layout-only changes may not be highlighted.
Can I compare a scanned PDF with a digital one?
Run OCR PDF on the scan first to make its text machine-readable, then compare.
Is this tool safe to use with confidential files?
Yes. Every file is processed locally inside your web browser using JavaScript and WebAssembly. Nothing is uploaded to a server, stored, or shared — so contracts, invoices, medical records and personal documents stay 100% private on your device.
Is it really free? Are there any limits or watermarks?
Yes, it's completely free with no sign-up, no daily limits, and no watermarks stamped on your output. Process a single file or hundreds — the only limit is your device's memory.