Can I compare two PDFs that have a different number of pages?

Yes. The tool handles documents with different page counts. Added or removed pages are flagged in their own colour category so you can spot structural changes at a glance.

What languages does the OCR engine support?

The built-in OCR supports over 30 languages including English, Turkish, German, French, Spanish, and Italian. Selecting the correct language before running the comparison improves accuracy.

How accurate is the text comparison?

For native digital PDFs the accuracy exceeds 95 percent. Scanned documents depend on scan quality — clear, 300 DPI scans typically yield very accurate results.

Will it work on password-protected PDFs?

Password-protected files need to be unlocked before comparison. Use our PDF Permissions or PDF Unlock tool first, then upload the unlocked copies here.

Can the exported report be opened without special software?

Yes. The HTML report opens in any modern web browser, and the annotated PDF works in Adobe Acrobat, Preview, and every standard PDF reader — no plugins required.

Are the documents I upload kept confidential?

All uploads are encrypted via SSL and both files are permanently deleted from our servers after the comparison is complete. We do not read, store, or share any document content.

Compare PDF — Free Online | KolayDönüştür

⏱️Files are processed on the server and automatically deleted after 24 hours. Processed under legitimate interest (Turkish KVKK art. 5).

⚡ Pro feature: Real line-by-line diff plus AI-powered document comparison — available on the Pro plan.

Real diff + AI redline

Compare two contract / document versions with a real, line-by-line diff (page-aligned). AI adds a prose summary and risk analysis on top.

Original (A)

Drag PDF/TXT

or click · Max 50MB

New version (B)

Drag PDF/TXT

or click · Max 200MB

Auto-deleted in 7 days

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Support

Your files are encrypted with SSL and automatically deleted from our servers 7 days after processing.

📖 How to Use

Upload PDF

Drag-drop or click to select your files.

Pick options

Page range / quality / orientation as needed.

Process

Click — server completes the task in seconds.

Download

Get the result; files are deleted in 7 days.

PDF Compare Pro (AI Redline)

📖 How to Use