Compare PDF

Compare two PDF documents and find differences. See changes side-by-side or highlighted in an overlay view. Perfect for reviewing document revisions. All processing happens locally.

Original PDF

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Modified PDF

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💡 How it works: Upload two PDF files to compare. The tool will analyze each page and highlight any visual differences between them.

Analyzing documents...

Comparison Results

100%
Original
Modified
Removed (in original only)
Added (in modified only)
Changed

Features

Side by Side

View both documents next to each other for easy comparison.

Visual Diff

See exactly what changed with color-coded highlighting.

100% Private

All comparison happens in your browser. Files never leave your device.

Multi-Page Support

Compare documents with any number of pages.

Frequently Asked Questions

What types of differences can it detect?

The tool detects visual differences — any change in text, images, formatting, or layout will be highlighted. It compares the rendered appearance of each page.

Can I compare PDFs with different page counts?

Yes! If one PDF has more pages, those extra pages will be shown as fully different (added or removed).

What do the colors mean?

Red shows content only in the original (removed), green shows content only in the modified version (added), and yellow indicates areas that changed.

Is it accurate for scanned documents?

Yes, since it compares visual appearance, it works with any PDF including scanned documents. However, minor scanning artifacts may show as differences.