🔁 Remove Duplicate Lines

Remove duplicate lines from text, preserve order. Free tool.

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📋 How to Use

1
Input

Fill in the required parameters

2
Execute

Click the generate/execute button

3
Result

View and copy your results

About This Tool

Remove duplicate lines from text, preserve order. Free tool.

How to Use

  • Enter or paste your data in the input fields above
  • Results update instantly - all processing in your browser
  • 100% free with no signup or account required

Tool Network

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function initTool() { var label = '去重操作'; var btnLabel = '处理'; var runStr = 'lines=>[...new Set(lines)].join("\\n")'; var scriptTags = document.getElementById('tool-app').parentElement.querySelectorAll('script[data-run]'); if (scriptTags.length) runStr = scriptTags[0].getAttribute('data-run'); document.getElementById('tool-app').innerHTML = '
';
}
function doIt() {
  var lines = document.getElementById('inp').value.split(String.fromCharCode(10));
  var result = [...new Set(lines)].join(String.fromCharCode(10));
  document.getElementById('out').textContent = result;
}
function clearAll() { document.getElementById('inp').value = ''; document.getElementById('out').textContent = ''; }
window.addEventListener('DOMContentLoaded', initTool);