PDF Diff

Instantly spot changes between PDF versions with intelligent visual comparison

The professional document comparison tool trusted by legal, financial, and compliance teams

Save Hours

Stop manually comparing documents line by line. Get instant visual feedback on what's changed.

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100% Private

All processing happens locally on your device. Your sensitive documents never leave your computer.

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Pinpoint Accuracy

Advanced algorithms ensure perfect page alignment, even when documents have different pagination.

Powerful Features for Professional Document Review

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Smart Page Alignment

Our AI-powered algorithm automatically aligns pages between documents using local embeddings and intelligent clustering, ensuring accurate comparisons even when pagination differs.

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Intelligent Page Matching

Automatically handles documents with different page counts by inserting blank pages where appropriate, maintaining perfect alignment for easy visual comparison.

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Side-by-Side View

View both PDF documents simultaneously with synchronized scrolling and zoom controls, making it effortless to spot additions, deletions, and modifications.

Lightning Fast

Optimized performance ensures smooth navigation even with large documents. Compare hundreds of pages without lag or delays.

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Precision Tools

Synchronized zoom and pan controls let you examine details closely. Perfect for reviewing fine print and technical specifications.

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One-Click Setup

No complex configuration needed. Install from Microsoft Store and start comparing documents immediately.

Built for Professionals Who Demand Precision

📊 Financial Analysts

Compare quarterly and annual reports to identify changes in financial statements, risk factors, and management discussions. Perfect for SEC filings like 10-K and 10-Q forms.

⚖️ Legal Professionals

Track contract revisions, amendments, and redlines with confidence. Ensure no changes slip through during negotiations or document reviews.

✅ Compliance Officers

Monitor regulatory filing changes and ensure all modifications meet compliance requirements. Maintain audit trails of document evolution.

🔍 Auditors

Review document modifications systematically. Verify that all changes are authorized and properly documented in your audit process.

💼 Business Professionals

Verify updates in proposals, reports, and presentations. Ensure version control and track evolution of important business documents.

📈 Investment Professionals

Quickly identify material changes in prospectuses, offering documents, and investor reports that could impact investment decisions.

Simple, Powerful Workflow

1
Select Original PDF

Choose your baseline document in the left panel

2
Select Revised PDF

Load the updated version in the right panel

3
Automatic Alignment

PDF Diff intelligently aligns both documents

4
Review Changes

Navigate synchronized pages to spot all changes

Your Privacy is Our Priority

PDF Diff operates entirely on your local device. We never see, store, or transmit your documents.

✓ No Cloud Upload ✓ No Data Collection ✓ No Internet Required ✓ 100% Local Processing ✓ Complete Confidentiality

Perfect for handling sensitive legal documents, confidential financial reports, and proprietary business information.