Text Compare / Diff Checker
Paste two versions of any text. Added lines are shown in green, removed lines in red, unchanged lines stay neutral. Runs entirely in your browser.
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Frequently asked questions
What does a diff show?
A diff compares two versions of text and highlights what changed: lines that were added, lines that were removed, and lines that stayed the same. It's the fastest way to spot exactly what moved between two drafts.
Can it compare code or config files?
Yes. Paste any two blocks of plain text — source code, JSON or YAML config, contracts, essays, log files — and the comparison works line by line regardless of the content.
Is my text uploaded anywhere?
No. The comparison runs entirely in your browser, so nothing you paste is sent to a server.
What's the difference between a diff and a merge?
A diff only shows the differences between two versions. A merge combines them into one result, resolving conflicts where both sides changed the same lines. This tool is a diff checker — it highlights changes for you to review.
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