Remove duplicate lines

Paste a list and get it back with each line appearing once, in its original order.

About this tool

Duplicates are matched exactly, line by line, including capitalization and spaces. The first occurrence of each line is kept and the original order is preserved — handy for cleaning lists, logs, keyword sets and exports.

Common questions

Are lines compared exactly? Yes — "Apple" and "apple" are different lines here. If you need case-insensitive deduping, lowercase the text first with the Case Converter.

Are blank lines kept? A single blank line is kept if present; repeated blank lines collapse to one.

Private by design: this tool runs entirely in your browser. Nothing you type or open here is uploaded, stored, or tracked.