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 · How HTML Doctype tell the browser which version of html it is? The <!DOCTYPE> declaration doesn’t directly specify which version of HTML is being used (like, "HTML5" or "HTML4"), …
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.
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 …
HTML Doctype Declaration | Docs With Examples - Hackr
Mar 12, 2025 · 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 is known as the Document Type …
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 …
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.
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.