Remove duplicate lines

Deduplicate lists of emails, keywords or names.

Paste a list and each repeated line is removed, keeping the order of first appearance.

How to use it

  1. Paste your list.
  2. Choose the options.
  3. Copy the result.

Questions

Are my files uploaded to a server?

No. The tool runs entirely in your browser using JavaScript, so your files never leave your device. You can even disconnect from the internet after the page loads and it keeps working.

Guides

All guides
Text tools · 23 Oct 2026How to Remove Duplicate Lines: Online, Excel, Notepad++, LinuxRemove duplicate lines online in one paste, or in Excel, Notepad++, VS Code and Linux with sort -u, uniq and awk. Keep the original order if you need to.Text tools · 23 Oct 2026How to Remove Line Breaks from Text Copied from a PDFRemove line breaks from text copied from a PDF in one click, or with Word find and replace (^p), Excel CHAR(10) and Notepad++. Keep paragraphs intact.Text tools · 23 Oct 2026How to Sort Lines Alphabetically (Word, Excel, Docs, Notepad++)Sort lines alphabetically online, or in Word, Excel, Google Docs, Notepad++ and Linux. Plus sorting by number or length, and why 10 comes before 2.

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