DL
Duplicate Line Remover
Paste your list — duplicate lines are removed in one click. Case-insensitive matching, whitespace trim and sorting options too.
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Input
Result
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How to use — Duplicate Line Remover
- Paste your list — one item per line (names, emails, URLs, anything).
- Choose options — case-insensitive matching, space trimming, sorting.
- Click Remove duplicates — only unique lines remain, and it shows how many duplicates were removed.
FAQ
Is the original order of lines preserved?
Yes — the first occurrence of each line stays in place, only later copies are removed. Turn on "sort" if you want A–Z order.
When should I use case-insensitive matching?
When "Apple", "apple", and "APPLE" should be treated as the same — like in email lists. The result keeps the original case of the first occurrence.
How large a list can this handle?
Hundreds of thousands of lines with ease — processing is instant in the browser.
Does this work for lists of emails/URLs?
Yes — it compares each line as-is. For email lists, keep both case-insensitive and trim on for the best results.
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