Free Duplicate Line Remover
This duplicate remover deletes repeated lines from any list, keywords, URLs, emails or stock codes, and can sort the result alphabetically. It is designed for marketers cleaning keyword exports, developers tidying datasets, and shop owners deduplicating inventory lists. Paste one item per line; the first occurrence of each line is kept and nothing is uploaded.
How it works
Lines are optionally trimmed and lowercased for comparison, then filtered so only each line's first occurrence survives. Original order is preserved unless Sort A–Z is ticked. The counter reports lines in, unique lines out, and duplicates removed.
Example
| Input (4 lines) | Output (3 lines) |
|---|---|
| apple banana apple orange | apple banana orange |
Frequently asked questions
How do I remove duplicate lines?
Paste one item per line and press Remove duplicates. The first occurrence of each line is kept.
Is matching case-sensitive?
By default yes. Tick Ignore case to treat Apple and apple as the same line.
Can I sort the list too?
Yes. Tick Sort A–Z to alphabetise after deduplication.
Is my list uploaded?
No. Everything runs locally in your browser.
How many duplicates were removed?
A live counter shows lines in, unique lines out, and duplicates removed.
Related tools
- Text Cleaner, normalise spacing before deduplicating.
- Case Converter, unify casing so matches are found.
- Word Counter, measure the cleaned list.
- Guide: How Word Count Works