Text Diff Checker

How to Use Text Diff Checker

1
Paste the original text
Enter or paste the original version of your text into the left panel.
2
Paste the revised text
Enter or paste the revised or updated version into the right panel.
3
View the differences
Differences are highlighted automatically: green for added text, red for removed text.
4
Choose diff mode
Switch between character-level, word-level, or line-level diff to see changes at different granularities.

Compare two versions of a code snippet or function to quickly identify what was changed between revisions.

Compare a draft document with a revised version to find all edits made by a reviewer or collaborator.

Lawyers and paralegals use diff tools to identify changes between contract versions during negotiations.

Compare an original text with its translation to verify that all sections have been addressed.

System administrators compare server configuration files to identify what changed between backups or versions.

No. All diffing is performed in your browser using JavaScript. Your text is never transmitted.

The tool uses a Myers diff algorithm, the same algorithm used in tools like Git.

Yes. Paste any text including code, and the diff will highlight changes. Syntax highlighting is not provided.

No hard limit, but very long texts (over 100,000 characters) may slow down the browser's rendering.

You can copy the result from the diff panel. A download option may be available depending on the version.