Dedupe Text

Remove duplicate lines from a list while keeping the original order.

Text & data Client-side Set

Tool preview

How to use it

! Comparison is on whole lines; partial matches are kept.
! Leading and trailing spaces are trimmed before comparing, which can merge visually different lines.

Does it sort the output?

No, the first occurrence of each line keeps its position.

Can it ignore case?

Yes, enable the checkbox to treat Apple and apple as the same line.

How many duplicates were removed?

The count is shown next to the copy button.

Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.

Count words, characters, paragraphs and reading time.

Highlight the differences between two blocks of text.

Switch between upper, lower, camel and snake case.