Duplicate Line Remover
Paste a list, click once — first occurrences kept, order preserved, count reported.
Deduplicated in your browser — your list never leaves this page.
Common questions
What counts as a duplicate?
An identical line that appeared earlier — the first occurrence is kept, later copies removed, original order preserved. "Trim whitespace" treats apple and apple as the same; "ignore case" adds Apple and APPLE to that.
What's this useful for?
Email lists, keyword lists, log files, exported CSV columns, inventory SKUs — any pasted list that accumulated duplicates. The status line reports exactly how many were removed.
Is my list uploaded?
No — deduplication runs in your browser. Customer emails and internal data never leave the page.