The following tables compare XHTML

XHTML

XHTML is a family of XML markup languages that mirror or extend versions of the widely-used Hypertext Markup Language , the language in which web pages are written....

 compatibility and support for a number of layout engine

Layout engine

A web browser engine, , is a software component that takes marked up content and formatting information and displays the formatted content on the screen. It "paints" on the content area of a window, which is displayed on a monitor or a printer...

s. Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date. Unless otherwise specified in footnotes, comparisons are based on the stable versions without any add-ons, extensions or external programs.

Only XHTML 1.1 is considered. XHTML 1.1 is necessarily XHTML 1.0 Strict with more elements and attributes deprecated. XHTML 2.0 is still a working draft with no layout engine support. XHTML 1.0 and HTML 4

HTML

HyperText Markup Language is the predominant markup language for web pages. HTML elements are the basic building-blocks of webpages....

 (both served with text/html) are covered in comparison of layout engines (HTML)

Comparison of layout engines (HTML)

The following tables compare HTML compatibility and support for a number of layout engines. Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date...

. The comparison of XML capabilities are covered in comparison of layout engines (XML)

Comparison of layout engines (XML)

The following tables compare XML compatibility and support for a number of layout engines. Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date...

.

Version number, if possible, is provided for feature that is fully supported. Proprietary extensions are not included.

Media types

The responses when a well-formatted XHTML document is served with different media types. Note that only application/xhtml+xml is the recommended media type.

Internet media type Internet media type An Internet media type, originally called a MIME type after MIME and sometimes a Content-type after the name of a header in several protocols whose value is such a type, is a two-part identifier for file formats on the Internet.The identifiers were originally defined in RFC 2046 for use in email...	Trident Trident (layout engine) Trident is the name of the layout engine for the Microsoft Windows version of Internet Explorer.It was first introduced with the release of Internet Explorer version 4.0 in October 1997; it has been steadily upgraded and remains in use today...	Tasman Tasman (layout engine) Tasman was a layout engine developed by Microsoft for inclusion in the Macintosh version of Internet Explorer 5. Tasman was an attempt to improve support for web standards, as defined by the World Wide Web Consortium. At the time of its release, Tasman was seen as the layout engine with the best...	Gecko Gecko (layout engine) Gecko is a free and open source layout engine used in many applications developed by Mozilla Foundation and the Mozilla Corporation , as well as in many other open source software projects....	WebKit WebKit WebKit is a layout engine designed to allow web browsers to render web pages. WebKit powers Google Chrome and Apple Safari and by October 2011 held over 33% of the browser market share between them. It is also used as the basis for the experimental browser included with the Amazon Kindle ebook...	KHTML KHTML KHTML is the HTML layout engine developed by the KDE project. It is the engine used by the Konqueror web browser. A forked version of KHTML called WebKit is used by several web browsers, among them Safari and Google Chrome...	Presto Presto (layout engine) Presto is the layout engine for later versions of the Opera web browser . After several public betas and technical previews, it was released on January 28, 2003 in Opera 7 for Windows, and as of Opera 11 it is still in use. Presto is dynamic: the page or parts of it can be re-rendered in response...	Prince XML Prince XML Prince is a proprietary software program that converts XML and HTML documents into PDF files by applying Cascading Style Sheets . It is developed by YesLogic, a small company based in Melbourne, Australia.-History:...
application/atom+xml	?	?	?	?	?	?	?
application/mathml+xml						?	?
application/rss+xml	?	?	?	?	?	?	?
application/xhtml+xml							?
application/xml							?
application/xslt+xml	?	?	?	?	?	?	?
image/svg+xml	?	?		?	?	?	?
text/xml							?
text/html							?

KHTML media type notes

1. application/xhtml+xml — KHTML supports this media type, but processes the document as HTML.
2. application/xml, text/xml — HTML entities and custom entities defined by custom DTD are not recognized.

Combined profiles

Extending XHTML by combining with other applications of XML

XML

Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

 (not referring using img/object element).

	Trident Trident (layout engine) Trident is the name of the layout engine for the Microsoft Windows version of Internet Explorer.It was first introduced with the release of Internet Explorer version 4.0 in October 1997; it has been steadily upgraded and remains in use today...	Tasman Tasman (layout engine) Tasman was a layout engine developed by Microsoft for inclusion in the Macintosh version of Internet Explorer 5. Tasman was an attempt to improve support for web standards, as defined by the World Wide Web Consortium. At the time of its release, Tasman was seen as the layout engine with the best...	Gecko Gecko (layout engine) Gecko is a free and open source layout engine used in many applications developed by Mozilla Foundation and the Mozilla Corporation , as well as in many other open source software projects....	WebKit WebKit WebKit is a layout engine designed to allow web browsers to render web pages. WebKit powers Google Chrome and Apple Safari and by October 2011 held over 33% of the browser market share between them. It is also used as the basis for the experimental browser included with the Amazon Kindle ebook...	KHTML KHTML KHTML is the HTML layout engine developed by the KDE project. It is the engine used by the Konqueror web browser. A forked version of KHTML called WebKit is used by several web browsers, among them Safari and Google Chrome...	Presto Presto (layout engine) Presto is the layout engine for later versions of the Opera web browser . After several public betas and technical previews, it was released on January 28, 2003 in Opera 7 for Windows, and as of Opera 11 it is still in use. Presto is dynamic: the page or parts of it can be re-rendered in response...	Prince XML Prince XML Prince is a proprietary software program that converts XML and HTML documents into PDF files by applying Cascading Style Sheets . It is developed by YesLogic, a small company based in Melbourne, Australia.-History:...
MathML MathML Mathematical Markup Language is an application of XML for describing mathematical notations and capturing both its structure and content. It aims at integrating mathematical formulae into World Wide Web pages and other documents...		rowspan="4"
SVG Scalable Vector Graphics Scalable Vector Graphics is a family of specifications of an XML-based file format for describing two-dimensional vector graphics, both static and dynamic . The SVG specification is an open standard that has been under development by the World Wide Web Consortium since 1999.SVG images and their...
XForms XForms XForms is an XML format for the specification of a data processing model for XML data and user interface for the XML data, such as web forms...	rowspan="2"			rowspan="2"		?
VoiceXML VoiceXML VoiceXML is the W3C's standard XML format for specifying interactive voice dialogues between a human and a computer. It allows voice applications to be developed and deployed in an analogous way to HTML for visual applications. Just as HTML documents are interpreted by a visual web browser,...