Diff Checker
Compare two texts side-by-side and instantly identify all differences
Side-by-Side View
Compare texts next to each other for easier analysis
Visual Highlighting
Added (green) and removed (red) text clearly marked
Similarity Score
Get percentage match between the two texts
Client-Side Processing
All comparisons stay private in your browser
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Comparison Results
Similarity
0%
Differences
0
Added Lines
0
Removed Lines
0
Text 1 (Original)
Text 2 (Modified)
Legend
Added Text
Removed Text
Unchanged Text
Common Use Cases
Code Review
Compare code versions to see exactly what changed in pull requests
Document Comparison
Track revisions and edits in documents, essays, and articles
Plagiarism Detection
Compare texts to identify plagiarism or duplicated content
Config Comparison
Compare configuration files, JSON, and settings versions
Best Practices
- Use Clear Text: Paste complete, unencoded text for best results
- Check Whitespace: Tabs and spaces are treated as different
- Order Matters: Text 1 is shown left, Text 2 is shown right
- Review Line by Line: Check the monospace output carefully
- Ignore Case Option: Copy and convert to same case if needed
- Remove Formatting: Strip HTML/markdown for plain text comparison
- Use Swap Feature: Reverse comparison order with one click
- Batch Comparisons: Use for multiple version checks
Keyboard Shortcuts
Ctrl + Enter Compare Texts
Ctrl + Shift + S Swap Texts
Ctrl + L Clear All