📝 Text Diff Checker — Compare Two Texts
Paste two versions of text and see which lines were added, removed or changed. Useful for reviewing edits, code snippets or documents without uploading anything.
Input
Result
Differences
Summary
Private by design. This tool runs entirely in your browser — nothing you enter or add is uploaded to any server.
How it works
- Paste the original text on the left and the modified version on the right.
- Press Show differences to compare them line by line.
- Added, removed and changed lines are marked so you can review the edits.
Examples
- Review changes to a paragraph or README.
- Compare two versions of a configuration snippet.
- Check student essay revisions or code comments.
Frequently asked questions
How are differences shown?
Lines that exist only in the original are marked removed, lines only in the modified text are marked added, and matching lines are shown as unchanged.
Is my text uploaded?
No. The comparison runs entirely in your browser using plain JavaScript. Your text never leaves your device.
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