DEDICATED TOOL PAGE

Compare two lists and see what changed.

Paste two one-item-per-line lists to find what appears only in A, only in B, and in both. This is useful for revisions, exports, contributor lists and spreadsheet prep.

Open in full workspace Read the cleanup guide

LIST COMPARISON

Run the tool

When two versions of a list are both long, the fastest question is often “what is new, missing or unchanged?” This page answers that directly.

List A

List B

Comparison result

COMPARISON TIPS

Prepare the lists before you compare them.

Normalize spacing first

Leading spaces and empty rows create false differences. Clean the inputs before trusting the result.

Deduplicate if needed

If repeats are accidental, remove duplicates first so the comparison focuses on meaningful presence and absence.

Sort for manual review

After the comparison, a sorted version of each list can make manual spot checks faster.

Common questions

Does order matter here?

No. This comparison treats each cleaned line as a set item, so it answers presence and overlap rather than sequence.

Can I compare very large lists?

Yes for typical browser-sized text inputs, though extremely large pasted lists may still become hard to review visually.