Private list cleanup

Remove Duplicate Lines Online

Remove repeated lines from pasted lists while preserving the first occurrence and original order.

Your text stays in your browser. Processing happens locally and nothing is uploaded.

Duplicate matching options
1
Original lines
1
Result lines
0
Removed

Clean repeated list entries

Use this tool for email lists, keywords, URLs, IDs, exported records, or pasted spreadsheet columns. The default keeps the first instance of every nonblank line and never alphabetizes the result.

Choose what counts as a duplicate

You can compare without capitalization or surrounding whitespace, deduplicate blank lines, or remove all blank lines. Comparison options do not rewrite the preserved line's visible content.

Frequently Asked Questions

The first occurrence is kept, and later matching lines are removed.

No. Original order is preserved.

Yes. Keep every blank line, keep only the first equivalent blank line, or remove all blank lines.

Related tools

Sort LinesRemove Blank LinesCase ConverterText Diff Checker