Remove Duplicate Lines
Paste any list of lines and instantly remove all duplicates. Keeps the first occurrence, preserves order, and ignores trailing whitespace. Free online duplicate line remover.
Result · 0 duplicates removed
Frequently Asked Questions
How do I remove duplicate lines from text?
Paste your text (one item per line) into the input. Duplicate lines are removed automatically and the unique result appears below.
Does it preserve the original order?
Yes. The first occurrence of each line is kept; subsequent duplicates are removed while maintaining the original order.
Is whitespace considered when detecting duplicates?
Trailing whitespace is trimmed when comparing lines, so lines that differ only in trailing spaces are treated as duplicates.