Writing & Productivity · Free Tool

Duplicate Line Remover

Paste a list and strip out repeated lines in one click — with options to ignore case and whitespace, drop blank lines, sort the result, and keep either the first or last occurrence. Nothing leaves your browser.

Trim whitespace Ignore case Drop blank lines Sort result

Keep

Input

Unique lines

0 lines in0 unique0 removed

How it works

Each line is compared against the ones already seen; repeats are dropped. "Trim whitespace" and "Ignore case" change what counts as a duplicate without altering the text you keep. "Keep last" is handy when later entries should win (e.g. deduplicating a log where the newest wins). Everything runs locally — your list is never uploaded.