Remove Duplicates From List
Remove duplicate lines from your list instantly. Paste one item per line and get a clean, unique list while preserving the original order. Optionally ignore blank lines for a cleaner result.
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Tip: changes apply instantly. Keeps the first occurrence order.
Runs 100% Locally in Your Browser
This tool processes your data entirely on your device. Nothing is uploaded, stored, or sent to any server.
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Frequently Asked Questions
How to remove duplicate lines from a list online?
Paste your list — one item per line — and the tool instantly outputs only the unique entries.
Does removing duplicates preserve the original order of items?
Yes. The first occurrence of each item is kept and the rest are removed, maintaining the original sequence.
What happens to blank lines when removing duplicates?
With the 'Ignore blanks' option enabled, blank lines are skipped entirely; disable it to treat them as regular entries.
Is the duplicate removal case-sensitive?
Comparison is done after trimming whitespace, so 'Apple' and 'apple' are treated as different items.
What if two items are the same but one has a trailing space?
Both are trimmed before comparison, so 'apple' and 'apple ' are treated as the same item and deduplicated.
Can I use this tool offline without an internet connection?
Yes — once the page loads, deduplication runs entirely in your browser; no server access is needed.