Diff Checker
Compare two texts and see exactly what changed. Line and word-level highlighting.
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Frequently Asked Questions
This tool uses the Myers diff algorithm — the same algorithm used by Git. It finds the minimum number of insertions and deletions needed to transform the original text into the modified text, producing the smallest possible diff.
When word-level diff is enabled, changed lines are further analyzed at the word level. Individual added or removed words are highlighted within the line, making it easier to spot small edits in long lines.
No. The entire comparison runs in your browser using JavaScript. Your text never leaves your device.