Remove Duplicate Lines
Delete repeated lines, keep unique ones – free, private, no sign-up.
Tip: press Ctrl + Enter (Cmd + Enter on Mac) to deduplicate.
How to Use
- Paste your list into the input box – one item per line.
- Click the “Remove Duplicate Lines” button (or press Ctrl + Enter).
- Repeated lines are deleted; the first occurrence and the original order are kept.
- Click “Copy to Clipboard” and paste the clean list wherever you need it.
Frequently Asked Questions
Which copy of a duplicate line is kept?
The first time a line appears, it stays. Later duplicates are removed, and the original order of your list is preserved.
Are “Line” and “line” considered duplicates?
No – comparison is case-sensitive, and trailing spaces matter. Run Remove Extra Spaces first if your lines might contain hidden whitespace.
Is my text safe when I use this tool?
Yes. The deduplication runs entirely in your browser with JavaScript. Your text is never sent to a server, never stored and never logged.