What is the Text Diff Checker?
Spotting the difference between two versions of a document, a contract, code, or an essay draft by eye is slow and error-prone. This tool runs a line-by-line comparison between two texts and highlights exactly what changed — added lines in green, removed lines in red — so you can review edits in seconds.
How to Use This Tool
- Paste the original text into the left box.
- Paste the changed/updated text into the right box.
- Click Compare to see the line-by-line differences.
Frequently Asked Questions
How does the comparison work?
It compares the two texts line by line and highlights added lines in green and removed lines in red.
Is my text sent to a server?
No. The comparison runs entirely in your browser.
Last updated: August 2026