DollarWise

Remove Duplicate Lines Online — Free Text Cleaner

October 10, 2026 · 2 min read · By the DollarWise team

Lists full of repeated lines are a pain — pasted email lists, keyword lists, data exports. Paste your text, set your cleanup options, and get a clean list with every duplicate removed in one click. Runs entirely in your browser.

Duplicate Lines Remover

Clean messy lists in one click — remove duplicates, trim spaces, sort, and drop empty lines.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Paste your text

One item per line. Works with thousands of lines.

2 Cleanup options

"Apple" and "apple" count as the same line.
Remove leading and trailing spaces before comparing.
Drop blank lines from the output.
Alphabetical output. Leave off to keep original order.

3 Clean & download

Working…

✅ Done — your cleaned list

🎉 Free forever. No sign-up. No credit card. No limits.

This tool runs entirely in your browser — clean as many lists as you like, as often as you like.

How it works

  1. Paste your list — one item per line.
  2. Toggle the cleanup options: case-insensitive matching, whitespace trimming, empty-line removal, A–Z sorting.
  3. Hit Remove Duplicates — copy the result or download it as a .txt file.

Everyday uses

  • Email lists — dedupe subscriber and contact lists before sending campaigns.
  • SEO & content — clean keyword and tag lists without manual scanning.
  • Students — tidy up reference and bibliography lists.
  • Data exports — remove repeated rows from copied spreadsheet columns.
  • Developers — dedupe config entries, URLs, and test data lists.