This page contains information on the HTML4 file extension (Hypertext Markup Language File), a popular video file format

HTML4 HTML4 (Document)

File extension .html4
Category Document File
Description HTML4 has been superceded by HTML5, however still plays an important role in the history of HTML. HTML4 was the first version to include cascading style sheets (css), and these were changed further in HTML5 which included more presentational elements - HTML4 led the way here.
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Technical Details HTML 4.01 was published in late 1999 as a W3C Recommendation. It offers three variations: Strict, in which deprecated elements are forbidden, Transitional, in which deprecated elements are allowed and Frameset, in which mostly only frame related elements are allowed. XHTML is a separate language that began as a reformulation of HTML 4.01 using XML 1.0. It is no longer being developed as a separate standard. Most presentational markup elements were deprecated under the HTML 4.0 specification in favor of using CSS for styling.
Associated programs
  • Any Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
Developed by World Wide Web Consortium & WHATWG
MIME type
  • text/html
Useful links