XHTML file format description

Many people share .xhtml files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .xhtml file can be edited, converted or printed with. On this page, we try to provide assistance for handling .xhtml files.

1 filename extension(s) found in our database.

.xht - XHTML Document

The XHT document files are related to Mozilla Firefox. The XHT file is an Extensible HyperText Markup Language document. XHTML is a markup language that has the same expressive possibilities as HTML, but a stricter syntax.

Mozilla Firefox
Document files
- / -
xhtm, xhtml
XHTML Document related extensions:
Autodesk DWF XPS Document
RoadEng Terrain Design Document
Microsoft OneNote Document
Caditor Encrypted Document
Microsoft Power BI Report
DeskMate Drawing Document

Naturally, other applications may also use the .xhtml file extension. Even harmful programs can create .xhtml files. Be especially cautious with .xhtml files coming from an unknown source!

Can't open a .xhtml file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .xhtml file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ahtml, chtml, dhtml, html, shtml, xhtm, xtml, zhtml

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Server Side Include HTML Document
XML4web HTML Document
Secure IE Zipped HTML
Amulet Module Main OS File
Hypertext Markup Language Document
Compact HTML Document

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .xhtml file format, then write to us!

DataTypes.net >> XHTML file