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List Diff

文本工具 Free Online Tool No Installation Browser Ready

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About This Tool

Compare two lists and get A-only, B-only, intersection and merged results instantly. Empty lines and duplicates are removed automatically.

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Data Security: This tool runs entirely in your browser. All data processing happens locally and is never uploaded to any server.

What are the comparison rules? ▼

Empty lines and whitespace are trimmed, duplicates removed, then set operations: A-only = A−B; B-only = B−A; both = intersection; merged = union.

Is result order meaningful? ▼

Items keep their first-appearance order from the original lists.

Is my data stored? ▼

No. Comparison happens on the fly and nothing is retained.