Remove Duplicate Lines
Clean up lists in a second.
- 100% free
- No sign-up
- Runs in your browser
Unique lines, original order
Paste an email list, keyword list or log file and every repeated line disappears — keeping the first time each one appears, in the order you gave it.
Choose whether "Apple" and "apple" count as the same, and whether stray spaces should be ignored.
- 1
Paste your list
One item per line.
- 2
Set options
Case, spaces and blank lines.
- 3
Copy or download
The cleaned list as text.
Frequently asked questions
Does it change the order?
No. The first occurrence of each line stays where it was; only later repeats are removed.
How big a list can it handle?
Hundreds of thousands of lines — it's limited only by your browser's memory.
Is my data uploaded anywhere?
No. Everything runs in your browser with JavaScript — nothing you type or open is sent to our servers.