Duplicate Line Remover

Remove duplicate lines from any list or text, with sorting and trimming options.

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About the Duplicate Line Remover

Paste any list and remove duplicate lines in one click. Options let you ignore case, trim whitespace, remove empty lines and sort the result alphabetically — with a live count of how many duplicates were removed.

A daily essential for cleaning email lists, keyword lists, CSV columns, log files and any copy-pasted data.

How to use the Duplicate Line Remover

  1. Paste your list (one item per line) into the input.
  2. Choose options: ignore case, trim spaces, remove empty lines, sort output.
  3. Click "Remove Duplicates" and copy the clean result.

Common uses

Cleaning email and subscriber lists Deduplicating SEO keyword lists Removing repeated log entries Preparing clean data for spreadsheets

Frequently asked questions

Does it preserve the original order?
Yes — by default the first occurrence of each line is kept in its original position. Enable sorting if you prefer alphabetical output.
Can it ignore upper/lower case differences?
Yes. With "Ignore case" enabled, "Apple" and "apple" count as duplicates.
How large a list can it handle?
Hundreds of thousands of lines process in under a second because everything runs locally.

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