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HTML Doctype

By Saket Bhatnagar•December 15, 2025•Beginner to Intermediate

Table of Contents

  1. doctype

doctype

  1. 1It is document type declaration.
  2. 2<!DOCTYPE> is a declaration in HTML that specifies the version of HTML used in a web page.
  3. 3It is not an HTML tag.
  4. 4The <!DOCTYPE> declaration must be the very first line of an HTML document, before the <html> tag.
  5. 5 It is important to include the correct <!DOCTYPE> declaration in an HTML document, as it can affect how the document is rendered in different web browsers.
  6. 6The HTML5 doctype declaration is:<!DOCTYPE html>
  7. 7In the case of HTML5, the doctype declaration is very simple and concise, and it replaces the longer, more complex doctype declarations that were used in previous versions of HTML.

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Last updated: January 15, 2026

Saket Bhatnagar

I build products, share the playbooks, and pass along everything I learn so you can ship faster.

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