Remove duplicate lines

Paste a list and get it back with the repeats gone. The first occurrence of each line stays exactly where it was, so the order you care about survives — and the tool tells you how many lines it removed, which is the difference between “there were no duplicates” and “nothing happened”. Case-insensitive matching is a toggle away.

This tool runs entirely on your device. Nothing you type here is uploaded, logged or stored.

Settings

Ignore case

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Result

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This tool runs entirely in your browser, so the controls above need JavaScript to do anything. The description stays readable either way — nothing here was ever going to be processed on a server.