Processed locally — your file never leaves your device
Remove Duplicate Lines
Remove repeated lines from a block of text, keeping the first occurrence — entirely in your browser.
How it works
- Paste text, or open a file.
- Click Remove duplicates.
- Copy or download the result — each line's first occurrence is kept, in its original order.
Frequently asked questions
- Is my text sent anywhere?
- No. Processing happens entirely on your device.
- Which occurrence is kept?
- The first one — later duplicates are removed, and the remaining lines keep their original order.
- Is the comparison case-sensitive?
- Yes — "Line" and "line" are treated as different lines.