Clean a messy list in seconds
Lists collect duplicates fast: exported email addresses, scraped URLs, keyword research, product codes. Going through them by hand is tedious and easy to get wrong. This tool takes a list with one item per line and keeps only the first occurrence of each, so what is left is clean and unique. It all happens in your browser, with nothing uploaded.
Options that catch near-duplicates
- Trim spaces: treat lines that differ only by leading or trailing spaces as the same.
- Ignore case: match Email@site.com and email@site.com as one entry.
- Remove blank lines: strip the empty gaps a paste often leaves behind.
- Sort: order the cleaned list A-Z or Z-A, or keep the original order.
Where it saves time
Deduplicating is one of those small jobs that shows up constantly: merging two mailing lists, tidying a keyword sheet before you import it, or making sure a set of IDs has no repeats. The ignore-case and trim options are what make it reliable, because most real duplicates are not exact, they differ by a stray space or a capital letter.
More list and text tools
For spreadsheet-style data you can also merge and dedupe CSV files, and for writing you can count words or compare two versions with the diff checker. Everything runs locally in your browser, free and unlimited, so your list never leaves your device.