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Rhad ac am ddim Compare Two Lists

Compare two lists to find items only in A, only in B, in both, or all combined and de-duplicated. Case and whitespace options. Runs in your browser.

Runs in your browserNo sign-up, no pop-upsNid oes angen mewngofnodiAm ddim am byth

List A (0 lines)

List B (0 lines)

Trim whitespaceIgnore case

— no items —

💡 Paste a list in each box (one item per line). Only in A = items missing from B · In both = the overlap · Only in B = items missing from A · All (unique) = combined, de-duplicated. Everything runs in your browser.

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Comparing two lists by hand is error-prone. Paste them here and instantly see which items are unique to each, shared, or combined — a set comparison in your browser.

1
You paste two lists
One item per line in each box. Nothing is uploaded.
2
They're compared as sets
Items are optionally trimmed and case-normalised, then matched between the lists.
3
You see four views
Only in A (missing from B), In both (the overlap/intersection), Only in B, and All unique (the union, de-duplicated) — each with a count.
4
Copy any result
Grab the list you need with one click.