Diffnote

Diffnote

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Document comparison
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Compare documents with IDE-level precision. Your files stay on your device — we never see them.

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document-comparison.diff
Original
1The quick brown fox jumps
2over the lazy dog.
3Lorem ipsum dolor sit amet,
4consectetur adipiscing elit.
5Sed do eiusmod tempor.
Modified
1The quick red fox leaps
2over the sleeping dog.
3Lorem ipsum dolor sit amet,
4consectetur adipiscing elit.
5Ut enim ad minim veniam.
+3 added-3 removed
5 lines total
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Everything you need,
nothing you don't

Built for simplicity and privacy. No bloat, no tracking, no compromises.

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Privacy First

Files never leave your device. All processing happens locally in your browser.

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Instant Setup

No registration, no installation. Just open and compare.

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Multiple Formats

Support for TXT, PDF, DOCX, JSON, and Markdown files.

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IDE-Style Views

Side-by-side and unified diff views with VS Code-style block revert.

Three steps to
perfect comparison

01

Upload or Paste

Drag and drop your files or paste text directly. We support TXT, PDF, DOCX, JSON, and Markdown.

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02

Compare Instantly

Our diff engine analyzes differences at line, word, or character level in milliseconds.

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03

Review & Export

Navigate changes easily with our IDE-style viewer. Export to HTML or PDF when done.

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Built for
every team

From legal contracts to code reviews, Diffnote handles it all.

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Legal Teams

Compare contract revisions instantly

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Writers & Editors

Track changes across document versions

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Developers

Review configuration and code changes

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Business Teams

Verify proposal and report updates

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