★ Free Text Tool
Remove Duplicate Lines
Delete repeated lines from a list and keep only unique entries.
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Runs entirely in your browser. Your files and text are never uploaded to our server.
About this toolRemove Duplicate Lines cleans up email lists, keywords and data exports by keeping the first copy of each line.
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Remove Duplicate Lines cleans up email lists, keywords and data exports by keeping the first copy of each line.
More about Remove Duplicate LinesHow to use, good to know & FAQ
How to use Remove Duplicate Lines
- Paste your list, one item per line.
- Choose whether to ignore letter case and trim spaces.
- Click "Remove duplicates" and copy the result.
Frequently asked questions
Is my text saved?
No. Text stays in your browser.
Is the check case-sensitive?
Choose case-sensitive or case-insensitive matching to suit your data.
Does it keep the original order?
Yes. The first occurrence of each line is kept in place.
When to use Remove Duplicate Lines
- Clean email or contact lists
- Deduplicate keyword research lists
- Remove repeated URLs from exports
- Tidy log files and data dumps
📘 Read the guide: How Many Words Should a Blog Post, Essay or Meta Description Be?