How do I remove duplicate lines from a list?

Paste your list into the text box, and duplicate lines are removed automatically as you type. Download or copy the cleaned result.

Does this tool keep the first or last occurrence?

You can choose either. By default, the first occurrence of each duplicate is kept and later repeats are removed.

You can toggle case sensitivity. With it off, "Apple" and "apple" are treated as duplicates.

No. All processing happens instantly in your browser using JavaScript. Your text is never sent to a server.

Paste any list — emails, URLs, keywords, code — and duplicate lines are removed instantly. See exactly what was duplicated and how many times.

Input0 lines

Result — no duplicates found

Options

Case-sensitiveTrim whitespaceIgnore blank lines

Keep occurrence

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Need to sort your list too?

Sort lines alphabetically or numerically after removing duplicates.