Free Duplicate Strings Remover — Remove Duplicate Lines Online

Text (one string per line) Result

How to use

Paste or type text with one item per line. Click Remove duplicates. First occurrence of each line is kept.

Clean lists, dedupe keywords or IDs. No storage.

How are duplicates detected?

Each line is treated as one string. We remove lines that appear more than once. You can keep first occurrence or sort then dedupe.

Is empty line counted?

Yes. Empty lines are treated as a single blank line; duplicates of the blank line are removed like any other.

Is my text stored?

No. We process in memory and return the result. Nothing is saved.