Remove Duplicate Lines

Remove duplicate lines from any text instantly with our free online tool. Ignore case, trim spaces, sort results, keep only unique lines, and download the cleaned list. Need to clean up a messy list? The Toolharo Remove Duplicate Lines tool deletes repeated lines from your text in one click. It works well for email lists, keyword lists, URLs, log files, and spreadsheet columns. Paste your text or upload a .txt file, choose your options, and get a clean list right away. You can ignore case, trim extra spaces, remove empty lines, and sort the result. The tool runs in your browser, so your text is never uploaded or stored. It is free and needs no signup.

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How to Use

  1. Paste your text into the Input box, with one item per line. You can also click “Upload .txt file” to load a file.
  2. Choose your options: case sensitivity, trimming spaces, ignoring punctuation, removing empty lines, and sorting.
  3. Pick a mode: remove duplicates and keep one copy, keep only lines that appear once, or show only the duplicated lines.
  4. Click “Remove Duplicates”, or leave “Live update” on and the result refreshes as you type.
  5. Check the stats and the duplicate report to see how many lines were removed and which lines repeated most.
  6. Click “Copy result” or “Download .txt” to save your cleaned list.