Free · no signup · browser-local
Remove Duplicate Lines While Keeping the Original Order
Paste a list to keep the first occurrence of each line. Match exactly or ignore case and surrounding spaces, then copy or download the cleaned list.
Your text
Result
Getting started
Paste one item per line and choose whether to ignore case and surrounding spaces.
Before you use the result
Only exact or optionally normalized whole lines are compared; similar phrases remain.
Try an example
Paste “Ada”, “ada” and “Ben” on separate lines to test the ignore-case option.
How it works
The first matching line is kept; subsequent lines with the same comparison key are removed.
Frequently asked questions
Remove repeated lines while retaining their first occurrence and order.
How do I use Duplicate Line Remover?
Paste one item per line and choose whether to ignore case and surrounding spaces.
Does this tool upload my data?
Inputs and files are processed in your browser. Page-view analytics do not contain your tool input.
What should I check before using the result?
Only exact or optionally normalized whole lines are compared; similar phrases remain.