Instantly remove duplicate lines from lists, text, keywords, and data with sorting and whitespace trimming.
Original Input List9 lines
Unique Lines Output5 unique
4 duplicates removed
How to Remove Duplicate Lines Online
Paste your text: Paste any list of words, emails, URLs, or data lines into the input box.
Choose deduplication rules: Toggle case-sensitivity, leading/trailing space trimming, and empty line exclusion.
Sort & Export: Optionally alphabetize from A to Z or sort by length, then click Copy or Download .txt.
Processes 100,000+ lines in seconds client-side. No limits, no data sent to external servers.
Frequently Asked Questions
Yes, by default the "Original Order" sort mode preserves the initial appearance of each unique item in your list. You can also switch to alphabetical A-Z or length-based sorting.
Yes, since the algorithm uses modern JavaScript HashSets, it can deduplicate tens of thousands of records instantly right in your browser.
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