Clean lists without reordering
Remove Duplicate Lines
Deduplicate lists, keywords, IDs, names, or any line-based text with precise matching options.
LINE CLEANER
Paste one item per line
Keep OrderIgnore CaseRemove Blanks
Choose whether capitalization and surrounding spaces should affect duplicate detection.
Keep the first or last occurrence without automatically sorting the cleaned list.
Even large lists remain in your browser and never enter analytics.
Deduplicate lists and repeated text lines
Remove duplicate lines from keyword lists, email exports, campaign names, product identifiers, tags, URLs, and other line-based data. The result preserves the source order and can retain either the first or last occurrence.
Optional rules let you ignore capitalization, compare trimmed values, and remove empty lines. Copy the cleaned list or download it as a text file when you are finished.
Duplicate line remover questions
Can matching ignore capitalization?
Yes. Leave case-sensitive matching off to treat entries such as Alpha and alpha as duplicates.
Can I keep the last duplicate instead of the first?
Yes. Choose whether the first or last occurrence is retained in the result.
Does the original order stay intact?
Yes. The tool removes duplicates without sorting the remaining lines.