Remove Duplicate Lines
Remove duplicate lines from any text or list instantly online. Free duplicate line remover — paste, deduplicate, copy.
Three steps to get started
Paste your list
Paste any multi-line text or list. Each line is treated as a separate item.
Duplicates removed
First occurrence of each line kept, all duplicates removed. Order preserved.
Copy or download
Click Copy for the clean list, or download as a .txt file.
Clean up lists and text files instantly
Duplicate lines appear in many common workflows: exporting data from spreadsheets, merging multiple keyword lists, combining log files, or building email lists from multiple sources. This tool removes them in one click.
Common use cases:
- Removing duplicate keywords from an SEO keyword list
- Cleaning up email lists before importing to a CRM
- Deduplicating CSV data or tab-separated lists
- Removing repeated log entries
- Merging multiple word lists and removing overlap
The tool offers both case-sensitive and case-insensitive deduplication. Case-insensitive is useful when you want "Apple", "apple", and "APPLE" to count as the same entry. The original order of the list is always preserved.
All processing happens in your browser — private, instant, no character limits.