About the Remove Duplicate Lines
Clean up email lists, keywords, product codes and other lists by removing duplicate lines. The original order is kept and the number of lines removed is shown.
Remove Duplicate Lines
Delete repeated lines from a list, keeping the first occurrence of each.
- Type or paste your text
- Choose what to do
- Copy the result
Runs in your browser. Your data and files never leave your device.
Frequently asked questions
Is it case sensitive?
Not by default — “Apple” and “apple” count as duplicates. Tick “Case sensitive” to keep both.
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