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Paste two versions of a text and see every difference highlighted line by line — additions, deletions, and changes each marked distinctly, so you can review what changed between drafts, configs, or code snippets without a git repo.
Common uses: comparing API responses, checking config drift between environments, reviewing copy edits, and verifying data migrations. The comparison runs entirely in your browser, so pasting real data carries no privacy risk.
Same core idea — line-based comparison with the classic diff algorithm — but zero setup: no repository, commits, or command line. Ideal for one-off comparisons of pasted text; use git when you need history and merging.
The comparison is line-based and language-agnostic, which works well for code, JSON, config files, and prose alike. It does not do syntax-aware structural diffs.
No. Diffing happens locally in your browser. Nothing is transmitted, logged, or stored beyond your current session.
PureKit · diff · Free online tool — files processed locally in your browser, no upload.