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Diff Checker
Compare two texts side-by-side. Instantly see what was added, removed, or unchanged.
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+2 added
-1 removed
2 unchanged
-Hello world
+Hello universe
This is line two
Same line
+Extra
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Line-by-line comparison
The Diff Checker computes the Longest Common Subsequence between your two inputs and highlights insertions, deletions, and matching lines. It's ideal for comparing contract revisions, code snippets, configuration files, or any pair of documents. Everything runs in your browser — your text is never uploaded.
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