When to use text diff checker
A line comparison is useful for reviewing a revised configuration or a copied document. Paste the earlier version on the left and the new version on the right. The result marks deletions with a minus and additions with a plus. Color is supplementary, so the changes remain understandable without relying on red and green alone.
How it works
- Paste the original and revised text.
- Compare the two versions.
- Read the line changes or copy the diff.
Try this example
First line Second line Third line
Before you export or rely on the result
This is a text comparison, not a semantic code review. Line endings are normalized. Each input is limited to 100,000 characters.
Does this tool upload my input?
No. This tool processes input in your browser. Optional advertisements are separate third-party content and load only when you allow ads. See the privacy notice for hosting logs and advertising details.
Can I use the result without creating an account?
Yes. Text Diff Checker is free to use without an account. Review the result against the limits above and the requirements of the app or document where you plan to use it.