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 to expect. In …
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 …
HTML DOCTYPE Declaration - GeeksforGeeks
Apr 3, 2026 · Doctype Declaration for Different Version of HTML and XHTML Specifies the appropriate DOCTYPE syntax used for different HTML and XHTML versions to ensure correct browser rendering.
html - What is DOCTYPE? - Stack Overflow
What is DOCTYPE and why do I want to use it? What are the different DOCTYPEs I can use? What is the difference between standards and quirks mode, and what are some quirks I may run into with …
Doctype - Glossary | MDN - MDN Web Docs
Jul 11, 2025 · Doctype In HTML, the doctype is the required <!doctype html> preamble found at the top of all documents.
HTML: <!DOCTYPE> tag - TechOnTheNet
HTML: <!DOCTYPE> tag This HTML tutorial explains how to use the HTML element called the <!DOCTYPE> tag with syntax and examples.
DOCTYPE HTML 4.01 tutorial - HTML tutorials - w3resource
2 days ago · Document Type Declaration or DOCTYPE declares which version of html is being followed by the document in question.
Doctypes and markup styles - W3C Wiki
Mar 14, 2014 · The doctype also serves to make the browser render the page in so called "standards mode". In standards mode, browsers generally try to render the page according to the CSS …
What is a DOCTYPE Tag in HTML? - onlyxcodes
6 days ago · Importance of the DOCTYPE Tag in Web Development Including the correct DOCTYPE declaration in your HTML document is crucial for several reasons: 1. Ensures Cross-Browser …
: It's Code For Declaring A DOCTYPE In HTML5
The !DOCTYPE declaration, what it is, and how to use it in your document. Includes a list of doctypes to cut and paste into your HTML.