List comparison tool

Compare Two Lists Online

Paste two lists and see exactly what they share and what is missing from either side. Results preserve the original order and are calculated privately in your browser.

No upload Free to use Works on mobile

Compare tool

Compare Lists

Options

Comparison results

0 results

How to use Compare Lists

1

Paste both lists

Enter one value per line in List A and List B. Empty lines are ignored.

2

Set matching rules

Enable case-sensitive matching when uppercase and lowercase values should be treated as different.

3

Review each group

The output separates common values from values found only in either list.

Common uses

Data reconciliation

Compare exports from two systems and spot missing records.

SEO inventories

Compare tracked keywords, URLs, redirects, or sitemap entries.

Email and customer lists

Find shared and unmatched contacts before a migration.

Compare Lists FAQ

Can I compare lists without changing their order? +

Yes. Matching uses normalized values, while displayed results retain the first original value and input order.

Are duplicates counted more than once? +

The comparison output reports unique values so repeated rows do not hide the actual overlap or difference.

Can the comparison ignore letter case? +

Yes. Case-insensitive matching is the default, and case-sensitive matching is available as an option.

Keep working

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