XHTML - Extensible Hypertext Markup Language File

What is a XHTML file

Files saved with the XHTML extension are website files written in a certain programming language. The contents of the file are written in XHTML which is an extended version of HTML 4, thus creating XML 1.0 applications. Many up-to-date websites consist of code written in XHTML 1.0 or XHTML 1.1 as opposed to plain HTML nowadays.

Files written in the XHTML markup language use standard HTML tags. However, the more strict XML guidelines apply to the XHTML code as opposed to pure HTML code. Due to this, XHTML files are very well-formed and can easily be parsed using XML. Since January 2000, the XHTML programming language became a W3C Recommendation.

Here's a small, but not exhaustive list of programs that can open XHTML documents:

  • Adobe ColdFusion Builder 3
  • Adobe Dreamweaver CC 2015
  • Apple Safari
  • Microsoft Internet Explorer
  • Mozilla Firefox
  • And other web browsers.
Extension XHTML
MIME type application/xhtml+xml
Useful links
Example Files
(133.81 KiB)
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