List Compare help

List Compare takes two lists, one line per item, and works out the set relationships: the items in both, the items only in the first, the items only in the second, and the union.

Steps

  1. Paste one list on each side.
  2. Turn on ignore-case or keep-whitespace if you need them.
  3. Read the four result panels and the counts.

Common questions

Are duplicates within one list handled?

Yes. Each result list shows each distinct item once, and the counts report both the raw and the unique sizes.

What is the symmetric difference?

Everything that is in one list but not the other, which is the two only-in panels combined.

Does order matter?

No, but results follow the order of the first list, then the second.

Does anything leave my browser?

No. The tool runs entirely on this page.

Everything runs in your browser. Nothing you enter or drop is uploaded.

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