{"id":7494,"date":"2024-07-24T19:06:26","date_gmt":"2024-07-24T17:06:26","guid":{"rendered":"https:\/\/media-beats.com\/?post_type=glossary&p=7494"},"modified":"2026-04-18T19:30:52","modified_gmt":"2026-04-18T17:30:52","slug":"xhtml","status":"publish","type":"glossary","link":"https:\/\/media-beats.com\/en\/glossar\/xhtml\/","title":{"rendered":"XHTML"},"content":{"rendered":"

XHTML<\/strong> (Extensible Hypertext Markup Language<\/strong>) is a stricter variant of HTML<\/strong><\/a> that is based on XML<\/strong> and defines clear rules for the structure of web documents. You use XHTML<\/strong> to define content in a clean, unambiguous, and machine-readable way. In contrast to classic HTML<\/a>, all elements must be properly closed and correctly nested. This results in a more precise<\/strong> and more error-prone<\/strong>, but controlled structure<\/strong>.<\/p>\n\n\n\n

What is XHTML?<\/h2>\n\n\n\n

Extensible Hypertext Markup Language<\/strong>, a markup language<\/strong> (Markup Language<\/strong>), combines the flexibility of HTML<\/a> with the strict rules of XML<\/strong>. Every element must be written correctly, including closed tags and a clear hierarchy. Browsers interpret the code<\/a> more consistently as a result. At the same time, the structure makes processing by machines and systems easier. The markup language<\/strong> therefore places greater emphasis on accuracy than on error tolerance<\/strong>.<\/p>\n\n\n\n

Why is XHTML important?<\/h2>\n\n\n\n

Extensible Hypertext Markup Language<\/strong> was developed to standardize web standards<\/strong> and promote structured content<\/strong>. In modern projects, however, HTML5<\/strong> is often used because it is more flexible. Nevertheless, XHTML<\/strong> still plays a role in certain systems, especially where a strict structure is required. In web development<\/a>, it helps to produce clean and valid code<\/a>.<\/p>\n\n\n\n

Important Rules<\/h2>\n\n\n\n

XHTML<\/strong> follows clear rules that you must adhere to:<\/p>\n\n\n\n

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  • All tags must be closed<\/li>\n\n\n\n
  • Elements must be nested correctly<\/li>\n\n\n\n
  • Attributes require quotation marks<\/li>\n\n\n\n
  • Tags are written in lowercase<\/li>\n\n\n\n
  • Documents must have valid XML structures<\/li>\n<\/ul>\n\n\n\n

    These rules ensure a clean and consistent structure<\/strong>.<\/p>\n\n\n\n

    Difference between XHTML and HTML<\/h2>\n\n\n\n