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 …
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.
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 …
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 …
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 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 …
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 …
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.