Diff Checker

Compare two text blocks and highlight the differences line by line. See additions, removals, and unchanged content at a glance. All processing happens in your browser.

Original

Modified

+ added - removed unchanged

Both texts are identical.

How it works

1. Paste

Paste the original text on the left and the modified version on the right.

2. Compare

Click compare to run a line-by-line diff using the Longest Common Subsequence algorithm.

3. Review

See added lines in green and removed lines in red. Unchanged lines show for context.

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