Text Diff Tool
Compare two texts and highlight differences
How to compare two texts online?
Compare text documents and highlight differences with our free online diff tool. Features line, word, and character-level comparison with unified and side-by-side views. Supports ignore whitespace, case-insensitive comparison, and more.
Features
- Line-by-line, word-level, and character-level diff comparison
- Unified and side-by-side diff views
- Ignore whitespace, case sensitivity, and trim options
- Color-coded additions, removals, and unchanged lines
- Copy diff output to clipboard
How to use
- Paste or type the original text in the left panel
- Paste or type the modified text in the right panel
- Configure comparison options (whitespace, case, granularity)
- Click Compare to see highlighted differences
- Switch between unified and side-by-side views
Tips & Best Practices
- Use the 'Ignore whitespace' option to focus on meaningful content changes.
- Try word-level diff for code changes where specific tokens matter.
- Use the side-by-side view for a clearer visual comparison of large texts.
- Load the sample data to quickly see how the tool works.
- All comparisons happen instantly in your browser with no server roundtrip.
FAQ
What is a text diff tool?
A text diff tool compares two pieces of text and highlights the differences between them. It shows which lines, words, or characters were added, removed, or remain unchanged. This is essential for code reviews, document versioning, and content comparison.
What comparison modes are available?
This tool offers three comparison modes: Line-by-line comparison for full line changes, Word-level diff for identifying changed words within lines, and Character-level diff for the most granular comparison of individual character changes.
Is this tool free to use?
Yes, this tool is completely free to use with no registration required.
Is my data safe and private?
Absolutely. All processing happens locally in your browser. No data is ever sent to our servers or any third party. Your input never leaves your device, making it completely safe for sensitive information.
Does this tool work offline?
Once the page is loaded, the tool works entirely in your browser without requiring an internet connection. All processing is done client-side using JavaScript, so you can use it even when offline.