HTML doctype declaration - W3Schools
Definition and Usage All HTML documents must start with a <!DOCTYPE> declaration. The declaration is not an HTML tag. It is an "information" to the browser about what document type …
Document type declaration - Wikipedia
A document type declaration, or DOCTYPE, is an instruction that associates a particular XML or SGML document (for example, a web page) with a document type definition (DTD) (for …
Doctype - Glossary | MDN
Jul 11, 2025 · In HTML, the doctype is the required <!doctype html> preamble found at the top of all documents.
What is the meaning of DOCTYPE in HTML - GeeksforGeeks
Jul 23, 2025 · The HTML document type declaration or Doctype is an instruction used by web browsers to fetch what version of HTML the website is written in. It helps browsers in …
Understanding HTML Doctype: Definition, Examples
The HTML Doctype declaration (<!DOCTYPE>) is an instruction to the web browser about the version of HTML being used in the document. It ensures that the browser renders the page …
What is DOCTYPE in HTML? Explained with Examples - Intellipaat
Oct 29, 2025 · Learn the purpose of the doctype in HTML, why it’s used, syntax, usage examples, common mistakes, and how it helps browsers correctly render your web pages.
Syntax of HTML5 Doctype Declaration - Tutorial Republic
A Document Type Declaration, or DOCTYPE for short, is an instruction to the web browser about the version of markup language in which a web page is written. A DOCTYPE declaration …
HTML Document Type Declaration - W3Schools
The HTML5 doctype declaration is concise, easy to use, reliable, and case-insensitive. In HTML5, only the doctype declaration is required to enable standards mode for web pages.
What is the DOCTYPE Declaration in HTML? An Essential Guide for …
Jan 11, 2025 · The DOCTYPE must be the very first line of code in your HTML, before the <html> tag. It is considered best practice to always add the declaration in your pages for stability.
HTML Doctype Declaration - Seobility Wiki
The doctype element specifies which version of HTML is used and contains instructions about the elements that are available.