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dashutils

Remove Duplicate Lines

Clean up lists of emails, keywords, URLs or names. Remove duplicate lines, sort alphabetically or naturally, reverse, shuffle, trim whitespace and drop empty lines.

  • Free, no sign-up
  • Runs locally in your browser
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Your files are processed on this device and are never uploaded to a server.

How to use the Remove Duplicate Lines

  1. 1

    Paste or type your input.

  2. 2

    Choose the operation and options.

  3. 3

    Copy the output or download it as a file.

Options

Choose case-sensitive or case-insensitive matching for duplicates, and natural sorting so item2 comes before item10.

Frequently asked questions

Is my data sent to a server?

No. Everything runs in your browser as you type. Nothing is uploaded or logged, so it is safe to paste API responses, tokens and private text.