Remove duplicate lines
Clean up repeated lists in one click: e-mails, names, URLs, codes.
Paste a list with repeated lines — e-mails, keywords, URLs, product codes — and get back only the unique entries, preserving the original order. Options to ignore case and spacing, drop empty lines and sort alphabetically. Your lists never leave the browser.
Clean lists by removing repeats
Paste a list and the tool removes repeated lines, leaving each item just once. Use it to clean email lists before a send, remove duplicate URLs, consolidate records, deduplicate SEO keywords, or any list that piled up repeats over time.
Sort and normalize at the same time
Besides removing duplicates, you can sort the result alphabetically and ignore differences that do not matter (like case and trailing spaces), so "Email@x.com" and "email@x.com " are treated as the same item. This catches "hidden" duplicates that a literal comparison would miss.
Your list stays in the browser
Processing is local: lists with emails, phone numbers or customer data are never uploaded. Copy the clean result with one click. For other text cleanups, see the word counter and text compare.
Frequently asked questions
Does "ignore case" change the output text?
No. The option only affects comparison: "Maria@email.com" and "maria@email.com" become one entry, keeping the spelling of the first occurrence. The same applies to the spacing option.
Is the original order kept?
Yes — each line appears at the position of its first occurrence, the expected behavior for contact lists and spreadsheets. If you prefer, check "sort result" for alphabetical output.
Is it safe to paste customer e-mail lists?
Yes. Deduplication runs entirely in your browser with no data upload — unlike many similar sites, your contact list never touches a server.