Remove Duplicate Lines

Remove repeated lines from lists, keeping the first occurrence and the original order.

What is the Remove Duplicate Lines?

Useful for cleaning email lists, keywords, product codes or any list with repeats.

How does it work?

Each line is compared (optionally ignoring case and surrounding spaces) with lines already seen; repeats are dropped.

Example

apple, banana, Apple, banana → apple, banana (ignoring case).

Frequently asked questions

Is my text uploaded anywhere?

No. All processing happens in your browser, so your text never leaves your device.

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