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.
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.