Data Cleaner & Deduplicator

Deduplicate lines, trim whitespace, remove empty lines, sort, and find-and-replace with regex support. Quick cleanups for lists, keyword sets and dataset columns.

How to Use

  1. 1

    Paste your list - one item per line.

  2. 2

    Toggle the cleaning options: trim whitespace, remove duplicates, remove empty lines.

  3. 3

    Optionally use Find & Replace (plain text or regex) to rewrite entries.

  4. 4

    Click Clean and copy or download the result.

Frequently Asked Questions

Can I remove duplicates while ignoring letter case?

Yes. Enable the Ignore case option so Apple and apple are treated as the same entry while keeping the first occurrence.

Does find-and-replace support regular expressions?

Yes. Tick the Regex checkbox and use standard JavaScript regex syntax, including capture groups in the replacement.