Text Diff
Compare two blocks of text line by line, with added/removed highlighted
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Frequently asked questions
Does this compare word-by-word or line-by-line?⌄
Line-by-line. Each line is treated as a single unit, so a change in the middle of a line marks that whole line as removed-then-added rather than highlighting the exact changed word.
What algorithm does the comparison use?⌄
A classic longest-common-subsequence (LCS) line diff — the same family of algorithm behind tools like "diff" and Git's line-level comparisons.
Is my text uploaded anywhere?⌄
No — the comparison runs entirely in your browser. Neither text block is ever sent to a server.