No. The first occurrence of each line is kept; later duplicates are removed.

Is blank line dedupe supported?

Yes. With trim-aware mode, lines that differ only by whitespace count as duplicates.

Duplicate Line Remover

Keep the first occurrence of each line.

Theme

Private by design: This tool runs in your browser — your data is not uploaded.

Text

Trim lines when matching

Result

Paste a list with repeated lines and keep only the first occurrence of each — great for cleaning logs, emails, or CSV rows.

Does order change?: No. The first occurrence of each line is kept; later duplicates are removed.
Is blank line dedupe supported?: Yes. With trim-aware mode, lines that differ only by whitespace count as duplicates.

Last updated: 2026-06-03