How do I remove duplicate lines from a list?

Paste your lines into the input box, choose any cleanup options, and click Remove Duplicates. The result keeps only the first version of each unique line.

Can I ignore capitalization when checking duplicates?

Yes. Turn on the ignore case option to treat lines like Apple and apple as duplicates.

Can I sort the cleaned list afterward?

Yes. You can sort the result alphabetically after removing duplicates, then copy or download it.

Remove Duplicate Lines

Clean repeated rows from notes, exports, keyword lists, classroom data, and copied spreadsheets.

Paste your lines

Ignore case Trim spaces Remove empty lines Sort result A-Z

Cleaned result

Paste some text and remove duplicates to begin.

Try related tools

Continue cleaning text with Case Converter, Alphabetize, and Word Counter.

When this tool helps

Duplicate lines show up all the time in copied spreadsheets, email lists, keyword dumps, exports, and class rosters. This tool removes repeats without forcing you into a spreadsheet app or script.

Cleanup options

Ignore case: treats lines like Apple and apple as the same entry.
Trim spaces: removes extra spaces at the start and end of each line before comparing.
Remove empty lines: drops blank rows from the final output.
Sort result: alphabetizes the cleaned list after duplicates are removed.

Frequently asked questions

Which copy of a duplicate line is kept? The tool keeps the first matching line it sees and removes later repeats.

Can I use this for names, keywords, or IDs? Yes. It works well for any one-line-per-item list.

Can I download the cleaned result? Yes. After cleanup, use the download button to save a plain text file.