Text Diff Checker
Compare two versions of text and instantly see what changed. This diff tool highlights added and removed lines so you can review edits between drafts, configs, or snippets. Comparison runs entirely in your browser — nothing is uploaded.
- Free — no sign-up
- Private — runs in your browser
- Instant results
How to use the Text Diff Checker
- 1Paste the original. Add the first (old) version of your text on the left.
- 2Paste the changed version. Add the second (new) version on the right.
- 3Review the diff. See removed lines and added lines clearly marked so changes stand out.
Examples
Spotting an edited line
Input
Original:
Name: Ada
Role: Admin
Changed:
Name: Ada
Role: EditorResult
− Role: Admin
+ Role: EditorThe first two lines match, so only the changed role line is flagged — removed (−) on the old side and added (+) on the new side. Great for reviewing edits to configs or copy.
Frequently asked questions
Does it compare line by line or word by word?
It compares line by line, marking whole lines as added or removed — a clear, reliable view for reviewing text and code changes.
Is my text kept private?
Yes. The comparison happens locally in your browser, so both versions of your text stay on your device.