Text Diff
Compare differences between two texts instantly. Support for word-by-word and line-by-line comparison. Free online diff tool.
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What is Text Diff Checker?
Comparing two versions of text is essential for code reviews, document editing, and content management. Our Text Diff Checker instantly highlights differences between two text blocks, making it easy to see what changed, what was added, and what was removed.
The tool runs entirely in your browser with no server-side processing. Your data never leaves your device, ensuring complete privacy and security. No registration required - just open and use.
How to use
- 1 Paste the original text in the "Old Text" panel
- 2 Paste the modified text in the "New Text" panel
- 3 Choose comparison mode: line-by-line or character-level
- 4 View differences highlighted with green (additions) and red (deletions)
- 5 Click "Copy Diff" to copy the comparison or "Download" to save as text
Common use cases
- ✓ Code reviews: compare changes before merging pull requests
- ✓ Document editing: track revisions in contracts and reports
- ✓ Content management: detect unauthorized changes to website content
View full documentation for more use cases →