1. Paste both lists
One item per line works best: emails, product codes, names, URLs or anything else.
List Compare
Paste two lists and instantly see what is only in the first, only in the second, and in both. Handles duplicates, blank lines and letter case.
- Free, no sign-up
- Instant results
- Nothing is stored
0Unique in A
0Unique in B
0In both
0Combined unique
Paste two lists above to see the comparison.
Only in A 0
In both 0
Only in B 0
How it works
Compare two lists in seconds
2. Set the rules
Choose whether letter case and extra spaces matter, and how items are separated.
3. Copy the result
Copy what is only in A, only in B or in both with one click, ready to paste anywhere.
Use cases
What people compare
Email lists
Find subscribers missing from a new export, or remove unsubscribes from a send list.
Inventory and SKUs
Spot products that exist in one system but not the other before a stock sync.
URLs and redirects
Check which old pages are missing from a sitemap or a redirect map.
Attendance and rosters
See who registered but did not attend, or who is on one team list and not another.
FAQ
Common questions
Is my data uploaded anywhere?
No. The comparison runs in your browser, so the lists never leave your device. If JavaScript is turned off, the lists are sent to our server only to build the result and are not saved or logged.
How are duplicates handled?
Each list is reduced to unique items before comparing, and the number of duplicates removed from each list is shown in the summary.
Does letter case matter?
By default "Apple" and "apple" count as the same item. Untick "Ignore letter case" to treat them as different.
Can I compare comma-separated lists?
Yes. Change "Split items by" to commas, or to "Any separator" to split on new lines, commas, semicolons and tabs at once.
How many items can I compare?
Tens of thousands of lines work comfortably in a modern browser. Very large lists may take a second or two.
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