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Duplicate Line Remover

Remove duplicate and empty lines from text.

Your files stay on this device

Files are processed in your browser, never uploaded. The site downloads code and assets to run the tools. No accounts or trackers.

Use Download to save this tool as one HTML file for offline use.

input trim each line remove empty lines case-insensitive matching keep order

output

About this tool

Strip duplicate and empty lines from a list, all in your browser.

Are duplicates detected after trimming?

Yes, if trim each line is enabled, lines are trimmed before comparison so spacing differences are ignored.

Is the original order kept?

With keep order on, the first occurrence of each line stays in place; turn it off to sort the result.