HTML doctype declaration - W3Schools
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 to expect. In HTML 5, the declaration is …
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 example, the formal …
Doctype - Glossary | MDN
Jul 11, 2025 · In HTML, the doctype is the required <!doctype html> preamble found at the top of all documents.
HTML DOCTYPE Declaration - GeeksforGeeks
Nov 1, 2025 · HTML DOCTYPE (Document Type Declaration) is an instruction that appears at the beginning of an HTML document, before the <html> tag. Its primary role is to tell the web browser …
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 correctly.
HTML Doctype Declaration | Docs With Examples - Hackr
Mar 12, 2025 · What is <!DOCTYPE> in HTML? The <!DOCTYPE> declaration is an instruction to the web browser about the type and version of HTML being used in your HTML project. This declaration …
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 appears at the …
Doctypes and markup styles - W3C Wiki
Mar 14, 2014 · In this article of the Web Standards Curriculum we will explore the different doctypes you are likely to come across on your journey around the Web, as well as looking at how XHTML and …
HTML Doctype: Syntax, Usage, and Examples
A doctype, short for "document type declaration," is an instruction to the web browser about the version of HTML or XML in use. While the doctype HTML tag isn’t technically an HTML tag (it’s a …
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 how the …