Remove Duplicate Lines removes repeated lines from a list and leaves one copy of each. Your text is processed in your browser and is not uploaded.

How to Use#

Paste your list into Your text, one item per line. The Result updates as you type.
Turn on the options you need:
- Ignore case so "Shoes" and "shoes" count as the same line.
- Trim spaces before comparing so leading and trailing spaces don't count.
- Remove empty lines to drop blank lines.
- Show only duplicates to list just the lines that were repeated.
Under Keep, choose First (default) or Last copy of each repeated line.
Under Sort, choose None (original order), A-Z or Z-A.
Click Copy result or Download .txt.

Things to know#

Default matching: with no options on, two lines match only if they are exactly the same, including capitals and spaces.
Original text is kept: with Ignore case or Trim on, the kept line keeps its original text; only the comparison changes.
Counts: the tool shows Total lines, Unique lines and Duplicates removed, plus how many empty lines were removed when that option is on.
Sorting: numbers sort in natural order, so item2 comes before item10.
Download: the file is saved as unique-lines.txt.
Privacy: everything runs in your browser.

When merging email or phone lists from two sheets, turn on Ignore case and Trim spaces before comparing to catch near-duplicates.
Use Clear to empty the input and start again.

Related: Word Counter, Case Converter