ThoseBoringTools
✍️ Text Tools

Remove Duplicate Lines

Paste a list with duplicate lines to instantly remove repeats, keeping the first occurrence of each unique line.

How to use this tool

  1. 1Paste your list into the input box, one item per line.
  2. 2Optionally enable case-insensitive matching.
  3. 3Copy the deduplicated result.

Frequently asked questions

Does the order of lines change?
No, the first occurrence of each unique line is kept in its original position; later duplicates are removed.
Can I remove duplicates ignoring case?
Yes, enable the case-insensitive option to treat "Apple" and "apple" as duplicates.