Duplicate Line Remover
Paste any list — emails, keywords, names, product SKUs — and clean it up in one pass: remove duplicates, strip extra whitespace, drop empty lines, and sort alphabetically if you want.
One tool, five list-cleaning options
Toggle each option independently: remove duplicate lines (with an option to ignore letter case so "Tashkent" and "tashkent" count as the same line), trim leading and trailing whitespace from every line, remove blank lines, and sort the result A-to-Z. This covers the most common cleanup needed before importing a list into a spreadsheet, CRM, or mailing tool.
Frequently asked questions
Can I choose whether duplicate detection is case-sensitive?+
Yes, there's a toggle for that — turn it off if "Tashkent" and "TASHKENT" should be treated as duplicates of each other.
Is there a limit on how many lines I can process?+
No hard limit for typical lists — thousands of lines process instantly since everything runs locally in your browser.