Text Diff Checker
Compare two texts line by line.
Runs in your browser: what you paste is never uploaded
How to use Text Diff Checker
- 1Paste or type your inputUse the box above, or click Sample to try it with an example.
- 2Choose your optionsPaste the original and the changed text, choose side-by-side or unified view, and optionally ignore case or whitespace.
- 3Copy the resultCopy it with one click. Nothing is sent anywhere.
About Text Diff Checker
Compare two texts and see exactly what was added, removed or changed, side by side or as a unified diff.
Frequently asked questions
Does it compare words or lines?
Lines are matched first, and changed lines show the words that differ.
Can I compare code?
Yes. It works with any plain text, including code, config files and CSV.
Is what I paste sent anywhere?
No. The tool runs entirely in your browser and never sends what you type or paste to a server.
Is it free?
Yes. It's free, with no sign-up and no limits.
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