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Duplicate Line Remover

Paste any text and remove all duplicate lines instantly. Sort alphabetically, count removed duplicates, and keep only unique entries. Works with email lists, CSV data, and any text.

Input Text (one item per line)
Total lines input
Unique lines
Duplicates removed
Reduction
Result
Frequently Asked Questions
How do I remove duplicate lines from text?

Paste your text into the input box — one item per line. This tool instantly removes all duplicate lines and shows only unique entries.

Can I remove duplicates from an email list?

Yes. Paste your email list with one email per line and click Remove Duplicates. Enable case-insensitive mode to catch duplicates like User@Example.com and user@example.com.

How do I remove duplicates from Excel?

Export your Excel column as a text file with one value per line, then paste it here. Copy the unique results and paste back into Excel.

Can I sort the unique lines alphabetically?

Yes. Check the "Sort A-Z" checkbox before processing and the unique lines will be sorted in alphabetical order.

What does case-insensitive duplicate removal mean?

With case-insensitive mode on, "Apple" and "apple" are treated as the same word, so only one is kept. Without it, they are treated as different values.