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 …
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 …
Doctype - Glossary | MDN
Jul 11, 2025 · The doctype is case-insensitive. The convention of MDN code examples is to use lowercase, but it's also common to write it as <!DOCTYPE html>.
HTML Doctype: Syntax, Usage, and Examples
Master the HTML doctype declaration! Learn why <!DOCTYPE html> matters, how it works, and how to avoid quirks mode and rendering issues.
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
Every HTML document requires a document type declaration. It is a directive that tells the web browser about the HTML version and standard in which the current page is written; this helps …
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 the DOCTYPE Declaration in HTML? An Essential Guide …
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 - Online Tutorials Library
The HTML <!DOCTYPE> declaration, is a component of the HTML document used to inform the web browser about the HTML version and document type it should use for rendering the page. …
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 …