Best for code, configuration, lists and structured documents.
Original
Modified
Diff Output
Paste text in both panels above to see the diff.
Compare two texts and highlight additions, deletions and changes line-by-line or word-by-word.
Best for code, configuration, lists and structured documents.
Best for edited prose where changes happen inside sentences.
Optionally ignore case or collapsed whitespace without altering displayed text.
Exact longest-common-subsequence comparison grows quadratically. Safety limits prevent the browser tab from freezing.
It is a plain-text representation where removed lines begin with minus and added lines begin with plus.
No. Both texts and the resulting diff stay in your browser.