Remove Duplicate Lines

Remove duplicate lines from any list or text while keeping unique entries. Free online duplicate line remover.

Everything runs in your browser. Your input is not sent to a server.

How to use Remove Duplicate Lines

Paste your list or multi-line text into the input.
Run the tool to strip duplicate lines.
Copy the cleaned unique lines.
Clear and paste a new list when needed.

How it works

Each line is compared (typically exact string match). First occurrences are kept; later exact duplicates are dropped. Order of first appearance is usually preserved.

Ideal for cleaning email lists, tags, log lines and inventory lists.

Examples

Lines: apple, banana, apple → result: apple, banana.
Blank lines may be treated as duplicates of each other depending on the tool rules.
Case-sensitive matching means “Apple” and “apple” stay both if that is how the tool compares.

Remove Duplicate Lines FAQ

Is matching case-sensitive?

Follow the behavior of the page—exact line comparison is typical.

Is order preserved?

Usually the first occurrence of each line is kept in its original order.

Is this tool free?

Yes. Processing stays in your browser.