How does duplicate detection work?

Each line is compared against all other lines. If case-sensitive is off, lines are compared after converting to lowercase.

What does 'preserve order' mean?

When enabled, the first occurrence of each unique line keeps its original position. When disabled, lines are kept in the order of their last occurrence.

Is empty line a duplicate?

Yes, empty lines are treated like any other line and duplicates are removed if detected.

Is my data sent anywhere?

No, all processing happens locally in your browser.

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