DiffDuo

DiffDuo allows users to compare two versions of text or files, displaying added, removed, and changed content side by side or in a unified format. The service is entirely private, operating within the browser without uploading data to a server, making it suitable for sensitive documents and code comparisons.

Key features

• Compare two texts or files instantly
• Side-by-side or unified diff views
• Word-level highlights for detailed changes
• Supports plain-text files up to 50 MB
• Ignore whitespace and case differences
• Handles large files efficiently
• 100% private, no uploads required

Best suited for

• Comparing code changes
• Reviewing document edits
• Finding differences in configuration files
• Identifying changes in data exports

Pricing

Not stated on the website