Online List Comparator - Compare Two Lists & Find Differences

Compare two lists online to find differences and common items. Runs 100% locally in your browser for privacy.

Use cases

Compare two email lists

Explore more in the Use cases library.

Compare two lists and find uniques/common values.
Normalize case, quotes, and whitespace before comparing.
Copy or export results for QA and data cleanup.

Paste IDs, emails, UUIDs, SKUs, hostnames, or any newline/CSV list. Then compare to find only-in-A, only-in-B, and common values. Works great for API responses, QA lists, and data cleanup.

List 1

(0)

Name

List 2

(0)

Name

Sort mode:

Shortcuts: Ctrl/Cmd + Enter Compare

Runs 100% locally in your browser

Case-insensitive Auto-compare

Advanced normalization

Normalize values

Strip surrounding quotes ( "abc" / 'abc' ) Collapse internal whitespace

Clean button behavior

Remove duplicates while cleaning Sort after cleaning (uses Lex/Num + toggle direction) Remove empty lines while cleaning

Online List Comparator - Compare Two Lists & Find Differences

Use cases

List 1

List 2

Results

Only in List 1

Common

Only in List 2