Remove Duplicate Lines
Clean up lists in seconds by removing repeated lines. Handy for email lists, tags, keywords or any text where each line should be unique.
How to use this tool
- Paste your list into the input box — one item per line.
- Choose your options: ignore case, trim spaces, remove blank lines.
- Press “Remove duplicates”.
- Copy the cleaned list or download it as a .txt file.
Key features
- Keeps the first occurrence and preserves the original order.
- Case-insensitive mode catches duplicates like “Apple” and “apple”.
- Trim mode treats “ line ” and “line” as the same line.
- Tells you exactly how many duplicates were removed.
Frequently asked questions
Always the first one. Later repeats are removed, so the order of your list stays intact.
It treats lines that differ only in capitalisation as duplicates — for example “News”, “news” and “NEWS” become one entry.
Processing happens in your browser, so there is no server limit — even very large lists work instantly.
This tool runs entirely in your browser — your text is never sent to or stored on our server.
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