Text · runs in your browser
Remove Duplicate Lines
Keep only the first occurrence of each line, case-insensitive optional.
- Supported formats
- Plain text
- Max file size
- Max No limit
- Speed
- Real-time
- Free
- Free, no sign-up
Paste text to transform it
Everything runs instantly, entirely in your browser.
Private by design. This tool runs entirely inside your browser — your files are never uploaded, stored or seen by anyone, including us.