HTML Metadata

Meta tags, Open Graph, Twitter cards, structured data, and SEO.

Overview

Metadata provides information about the document to browsers and search engines.

Key Concepts

Viewport — Mobile-friendly configuration
Open Graph — Social media sharing
Twitter Cards — Twitter-specific metadata
Structured Data — JSON-LD for rich snippets
Favicon — Browser tab icon

Code Examples

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  
  <!-- SEO -->
  <title>Page Title | Site Name</title>
  <meta name="description" content="Page description for search engines">
  <meta name="robots" content="index, follow">
  <link rel="canonical" href="https://example.com/page">
  
  <!-- Open Graph -->
  <meta property="og:title" content="Page Title">
  <meta property="og:description" content="Page description">
  <meta property="og:image" content="https://example.com/image.jpg">
  <meta property="og:url" content="https://example.com/page">
  <meta property="og:type" content="website">
  
  <!-- Twitter -->
  <meta name="twitter:card" content="summary_large_image">
  <meta name="twitter:title" content="Page Title">
  <meta name="twitter:description" content="Page description">
  <meta name="twitter:image" content="https://example.com/image.jpg">
  
  <!-- Favicon -->
  <link rel="icon" href="/favicon.ico">
  <link rel="apple-touch-icon" href="/apple-touch-icon.png">
  <link rel="manifest" href="/manifest.json">
  
  <!-- Structured Data -->
  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
    "@type": "WebPage",
    "name": "Page Title",
    "description": "Page description",
    "url": "https://example.com/page"
  }
  </script>
</head>
<body>
  <!-- Content -->
</body>
</html>

Practice

Create a complete metadata setup for a blog post with structured data.