Quick Answer
How do you remove duplicate lines?
// Answer
Paste your text, and the tool keeps only the first occurrence of each line, removing every repeat. You can optionally ignore case (so "Apple" and "apple" count as duplicates), trim spaces, and sort the unique results alphabetically.
Why use this tool
Clean lists in seconds
Great for cleaning up email lists, keyword lists, CSV columns, or any data where duplicates creep in. The original order is preserved unless you choose to sort, and everything happens privately on your device.
FAQ
Frequently asked questions
Paste the list with one item per line; the tool automatically keeps only unique lines.
Yes, by default it keeps the first occurrence in order. Enable "Sort A→Z" to alphabetize instead.
Yes. Toggle "Ignore case" and "Trim spaces" to treat near-identical lines as duplicates.
Yes, deduplication runs entirely in your browser.
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