Is this remove duplicate lines tool free?

Yes. It is free with no sign-up. Paste a list or open a .txt file and the cleaned result updates live in your browser.

Which copy of a repeated line is kept?

The first occurrence. Later lines that match under your chosen case, space and blank-line options are removed.

Is my list uploaded or stored?

No. The list is processed in your browser tab, and a .txt file you open is read on your device. This tool does not upload or store your text on a server.

What do the matching options change?

Case-sensitive decides whether Apple and apple are different. Trim spaces removes spaces at the edges before comparing. Ignore blank lines leaves blanks out of the result. Sort A-Z orders the unique lines after cleaning.

Does it merge lines that are almost the same?

No. It compares whole lines exactly under the options you choose. Near matches such as 'seo tool' and 'seo tools', or different spellings, stay as separate lines.

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