About Diff Checker
Compare two text files or code snippets and see the differences highlighted. Perfect for code reviews, document comparison, and tracking changes.
Features
- Side-by-side and unified diff views
- Line-by-line comparison
- Syntax highlighting for additions and deletions
- Ignore whitespace and case options
- Statistics showing additions, deletions, and changes
- Copy diff output
- Swap original and modified text
- Real-time comparison as you type
View Modes
- Split View: See original and modified side-by-side
- Unified View: See all changes in a single column with +/- indicators
Use Cases
- Code Review: Compare code changes before and after
- Document Comparison: Track changes in documents
- Version Control: See differences between file versions
- Content Updates: Compare website content changes
- Configuration Files: Compare config file differences
- Data Validation: Compare data outputs
- Debugging: Compare expected vs actual output
Color Legend
Green: Added lines
Red: Removed lines
Unchanged lines
How to Use
- Paste your original text in the left panel
- Paste your modified text in the right panel
- View differences highlighted automatically
- Toggle between split and unified views
- Use options to ignore whitespace or case
- Copy the diff output if needed
- Use swap button to reverse comparison
Tips
- Use "Ignore Whitespace" when comparing code with different indentation
- Use "Ignore Case" for case-insensitive text comparison
- Split view is better for large files
- Unified view is better for reviewing changes sequentially
- Load sample to see how the tool works
Privacy & Security
All text comparison happens locally in your browser. Your files and content are never sent to any server, ensuring complete privacy and security.