Are duplicates inside a single list collapsed?

Yes. The result panels are deduplicated based on the matching rules you choose.

What does 'union' include?

Every unique item from both lists combined, in the order it first appeared in A then in B.

Compare Two Lists

Drop two newline-separated lists into the boxes and instantly see what is shared, what is unique to each, and the merged union.

List A

List B

Case-insensitive Trim whitespace

In both lists (common)

All (union)

Only in A

Only in B

How to use Compare Two Lists

Paste the first list into the List A box.
Paste the second list into the List B box.
Optionally enable Case-insensitive or Trim whitespace.
Click Compare to fill all four result panels.

What is Compare Two Lists?

List comparison answers the everyday data question: what do these two lists have in common, and where do they differ? This tool builds four views from your input — items that appear in both lists, items only in A, items only in B, and the deduplicated union. Optional whitespace trimming and case-insensitive matching make it forgiving of pasted data.

FAQ

Are duplicates inside a single list collapsed?: Yes. The result panels are deduplicated based on the matching rules you choose.
What does 'union' include?: Every unique item from both lists combined, in the order it first appeared in A then in B.

Compare Two Lists

How to use Compare Two Lists

What is Compare Two Lists?

FAQ

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