Javascript Print Page as PDF

<script type="module" src="https://unpkg.com/ionicons@7.1.0/dist/ionicons/ionicons.esm.js"></script>
<script nomodule src="https://unpkg.com/ionicons@7.1.0/dist/ionicons/ionicons.js"></script>

<div class="container">
  <div class="header">
    <h1>Document Title</h1>
    <button class="print-btn" onclick="printAsPDF()">
      <ion-icon name="document-text-outline"></ion-icon>
      Print as PDF
    </button>
  </div>

  <div class="content">
    <h2>Welcome to PDF Print Demo</h2>
    <p>
      This page demonstrates how to print a webpage as a PDF using JavaScript's native print functionality. 
      When you click the "Print as PDF" button, your browser's print dialog will open, allowing you to 
      save the page as a PDF document.
    </p>

    <div class="info-box">
      <h3>How it works:</h3>
      <ul>
        <li>Click the "Print as PDF" button in the header</li>
        <li>Your browser's print dialog will appear</li>
        <li>Select "Save as PDF" as the destination</li>
        <li>Choose your preferred settings and save</li>
      </ul>
    </div>

    <h2>Additional Information</h2>
    <p>
      The print functionality uses the browser's built-in <code>window.print()</code> method, which is 
      supported by all modern browsers. The page includes special CSS rules (using @media print) to 
      optimize the layout for printing, such as hiding the print button itself.
    </p>

    <p>
      You can customize the print styles to control exactly how your document appears in the PDF. 
      This includes adjusting margins, hiding specific elements, or changing colors for better 
      print readability.
    </p>

    <div class="info-box">
      <h3>Browser Support:</h3>
      <ul>
        <li>Chrome: Full support with "Save as PDF" option</li>
        <li>Firefox: Full support with PDF export</li>
        <li>Safari: Full support on macOS</li>
        <li>Edge: Full support with native PDF creation</li>
      </ul>
    </div>
  </div>
</div>

    * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: #f5f5f5;
            padding: 20px;
            line-height: 1.6;
        }

        .container {
            max-width: 900px;
            margin: 0 auto;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 30px;
            border-bottom: 1px solid #e0e0e0;
        }

        h1 {
            font-size: 28px;
            color: #333;
            font-weight: 600;
        }

        .print-btn {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            background: #2563eb;
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s;
        }

        .print-btn:hover {
            background: #1d4ed8;
        }

        .print-btn ion-icon {
            font-size: 20px;
        }

        .content {
            padding: 30px;
        }

        .content h2 {
            color: #333;
            margin-bottom: 16px;
            font-size: 22px;
        }

        .content p {
            color: #555;
            margin-bottom: 16px;
        }

        .info-box {
            background: #f8fafc;
            border-left: 4px solid #2563eb;
            padding: 20px;
            margin: 24px 0;
            border-radius: 4px;
        }

        .info-box h3 {
            color: #2563eb;
            margin-bottom: 12px;
            font-size: 18px;
        }

        .info-box ul {
            margin-left: 20px;
            color: #555;
        }

        .info-box li {
            margin-bottom: 8px;
        }

        /* Print styles */
        @media print {
            body {
                background: white;
                padding: 0;
            }

            .container {
                box-shadow: none;
                border-radius: 0;
            }

            .print-btn {
                display: none;
            }

            .header {
                border-bottom: 2px solid #333;
            }
        }

       function printAsPDF() {
            // Trigger the browser's print dialog
            window.print();
            
            // Optional: You can add analytics or other tracking here
            console.log('Print dialog opened');
        }

        // Optional: Add keyboard shortcut (Ctrl+P or Cmd+P)
        document.addEventListener('keydown', function(e) {
            if ((e.ctrlKey || e.metaKey) && e.key === 'p') {
                e.preventDefault();
                printAsPDF();
            }
        });