Free Text Diff Checker
Compare two versions of text side by side to instantly identify every difference. The tool uses a color-coded display - green highlights show added text, red highlights show removed text - making it easy to track changes between document drafts, review edits made by collaborators, compare code changes before merging, audit configuration file differences across environments, verify that text transformations or find-and-replace operations produced the expected results, or check for discrepancies in copied content. Every added line and deleted line is clearly annotated so nothing slips through unnoticed.
How to Use
- Paste the original text into the left panel (Original version)
- Paste the modified text into the right panel (Changed version)
- The diff engine instantly compares both versions line-by-line
- Green = added lines, Red = removed lines, White = unchanged
- Scroll through to review every change at a glance
Use Cases
- Compare document versions before finalizing
- Review code changes before committing
- Track content edits in articles or blog posts
- Verify configuration file changes
Privacy
All comparison happens locally in your browser. No data is transmitted.
Last reviewed: July 2026.