List Difference

Compare two lists and see what is only in A, only in B and in both, with case and whitespace options.

List difference

Ignore case Trim whitespace Sort results

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Comparing two lists happens entirely in your browser.

Common questions about the free online list difference.

Paste one list into each box, one item per line, and the tool instantly shows what is only in A, only in B and in both lists.

Each line is one item. You can also separate items with commas or semicolons if you prefer to work on a single line.

With Ignore case ticked, Apple and apple are treated as the same item. Turn it off when capitalisation matters, such as for codes.

Trailing spaces make two identical items look different. With Trim whitespace on, stray spaces around each item are removed before comparing.

No. Each list is de-duplicated first, so a repeated item is counted once and the comparison stays easy to read.

Yes. Tick Sort results to order every output list alphabetically, which makes long lists much easier to scan.

No. Both lists are compared in your browser only, so nothing you paste is ever sent anywhere.

Yes. The comparison tool is fully responsive and works in any modern browser on desktop, tablet and phone.

Yes. The list difference tool is completely free, with no account, no sign-up and no usage limits.

Last updated: October 10, 2026