Enter items in each list (one per line) to compare them. Find unique items and common items between lists.
List A
0 itemsList B
0 itemsOnly in A
0No unique items
In Both
0No common items
Only in B
0No unique items
Compare two lists to find items unique to each list and items in common.
Compare lists
Enter items in each list (one per line) to compare them. Find unique items and common items between lists.
No unique items
No common items
No unique items
The List Comparison tool takes two lists — one item per line — and instantly shows which items are only in the first, only in the second, and in both. Paste in emails, SKUs, IDs, URLs, or usernames and get three result sets you can copy individually or all at once, with case sensitivity and whitespace handling under your control. Everything runs in your browser, so lists containing customer data or internal identifiers never leave your machine.
Results are deduplicated, so an item appearing three times in List A shows once. That's ideal for comparing two sets, but it does mean the tool can't be used to count duplicates inside a single list.
Not by default — Apple and apple are treated as the same item. Turn on Case sensitive for exact matching, which matters when you're comparing IDs, hashes, or anything where case is meaningful.
Trim whitespace is on by default, so leading and trailing spaces are ignored and ' apple' matches 'apple'. Turn it off only if the spacing itself is significant.
One line is one item. The tool splits on line breaks, so entries containing spaces or commas are fine — but a comma-separated list on a single line is read as one long item. Put each entry on its own line.
Yes. The comparison runs entirely in your browser. Nothing you paste is uploaded, stored, or logged, so it's safe for customer emails or internal identifiers.
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