Opening an XHT File

The XHT file type is primarily associated with Mozilla Firefox.

XHTFile Extension XHT
File extension: XHT
File type:  markup file

What is an XHT file?

XHT files mostly belong to Mozilla Firefox. XHT files are XML-based documents designed for web content. They follow XHTML standards, using a strict XML syntax similar to HTML.
Details include:
  • XHTML Content: The files hold code that meets XHTML rules, ensuring they are well formed for proper browser display.
  • Templates & Documents: They are used as web templates or complete XHTML documents. For example, browsers like Mozilla Firefox can use them to render pages accurately.
  • Format Variants: While many XHT files use standard HTML markup, some may even include PDF content formatted in XHTML, as seen with Adobe Acrobat Reader.
  • Editing & Viewing: You can open these files in a text editor to view the XML code or in a web browser to see the rendered content.
  • FilExt.com note: This file type is primarily for defining web page structure in a consistent, XML-driven way. Few people know that XHT files may change in internal structure, supporting diverse content types within the same extension.

    How to open an XHT file

    You need a suitable software like Mozilla Firefox to open an XHT file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your XHT file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a XHT file directly in the browser:. Just drag the file onto this browser window and drop it.

    Online XHT Text Viewer

    Choose your .xht file to view

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    How to extract texts from XHT files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

    If you want to extract texts from XHT file or capture a screenshot, you can use our free Online XHT File Viewer:
    1. To do so, click the "Choose your .xht file to view" button above.
    2. Your XHT file will then be displayed in the browser.
    3. Now click on "Save as..." at the top of the page.
    4. Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
    5. Download the converted file.

    Programs that open and convert XHT files:

    1. Mozilla Firefox
      See the previous paragraphs to learn more about the main application. XHT files are often referred to as Mozilla Firefox web (source)s because this type of file is primarily created or used by this software.
    2. Extensible HyperText Markup Language File
      The Mime types used with this association are: application/xhtml+xml. This file format is classified as Text.

    Technical Data for XHT File Extension

    File classification:
    Web (source)
    Related files:
    Mime type:
    application/xhtml+xml

    The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

    ProgramID: MozillaXHTML, FileType: XHTML Document, AppName: Mozilla
    EXEFile: MOZILLA.EXE

    ProgramID: MozillaXHTML, FileType: XHTML Document, AppName: Netscape
    EXEFile: NETSCP.EXE

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\MOZILL~1\FIREFOX.EXE -url %1

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\MOZILL~2\FIREFOX.EXE -url %1

    ProgramID: MozillaXHTML
    EXEFile: %ProgramFiles%\MOZILLA.ORG\MOZILLA\MOZILLA.EXE -url %1

    ProgramID: MozillaXHTML
    EXEFile: %ProgramFiles%\MOZILL~1.5\MOZILLA.EXE -url %1

    ProgramID: MozillaXHTML
    EXEFile: %ProgramFiles%\NETSCAPE\NETSCAPE\NETSCP.EXE -url %1

    ProgramID: MozillaXHTML
    EXEFile: %ProgramFiles%\MOZILL~1\FIREFOX.EXE -url %1

    ProgramID: AcroExch.XFDFDoc
    EXEFile: %ProgramFiles%\Adobe\Acrobat 7.0\Reader\AcroRd32.exe %1

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\MOZILL~1\NEWFOL~1\FIREFOX.EXE -url %1

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\FIREFOX.EXE -url %1

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\DEERPA~1\FIREFOX.EXE -url %1

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\FIREFOX\FIREFOX.EXE -url %1

    ProgramID: NetscapeHTML
    EXEFile: %ProgramFiles%\NETSCAPE\NETSCA~1\NETSCAPE.EXE -url %1

    ProgramID: htmlfile
    EXEFile: %ProgramFiles%\Internet Explorer\iexplore.exe -nohome

    ProgramID: MozillaXHTML
    EXEFile: C:\FAILSA~1\PHOENIX\PHOENIX.EXE -url %1

    ProgramID: MozillaXHTML
    EXEFile: %ProgramFiles%\NETSCA~1\NETSCP.EXE -url %1

    ProgramID: NetscapeHTML
    EXEFile: %ProgramFiles%\NETSCAPE\NETSCA~2\NETSCAPE.EXE -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\Firefox\Firefox.exe

    ProgramID: MozillaXHTML
    EXEFile: %ProgramFiles%\MOZILLA\MOZILLA.EXE -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\MOZILL~1\FIREFOX.EXE -url -requestPending

    ProgramID: NavigatorHTML
    EXEFile: %ProgramFiles%\NETSCAPE\NAVIGA~1\NAVIGA~1.EXE -url -requestPending

    ProgramID: SafariHTML
    EXEFile: %ProgramFiles%\Safari\Safari.exe -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\MOZILL~2\FIREFOX.EXE -requestPending -osint -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\_WWWUT~1\BROWSERS\FIREFOX\MOZILL~1\FIREFOX.EXE -requestPending -osint -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\MOZILLA\FIREFOX\FIREFOX.EXE -url -requestPending

    ProgramID: FlockHTML
    EXEFile: %ProgramFiles%\_WWWUT~1\BROWSERS\FLOCK\FLOCK\FLOCK.EXE -requestPending -osint -url

    ProgramID: FlockHTML
    EXEFile: %ProgramFiles%\FLOCK\FLOCK\FLOCK.EXE -requestPending -osint -url

    ProgramID: NavigatorHTML
    EXEFile: %ProgramFiles%\NETSCAPE\NAVIGA~1\NAVIGA~1.EXE -requestPending -osint -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\Minefield\firefox.exe -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\Mozilla Firefox 3 Beta 4\firefox.exe -requestPending -osint -url

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\Shiretoko\firefox.exe -requestPending -osint -url

    ProgramID: Opera.HTML
    EXEFile: %ProgramFiles%\Opera\Opera.exe

    ProgramID: SafariHTML
    EXEFile: %ProgramFiles%\Common Files\Microsoft Shared\OFFICE12\MSOXMLED.EXE /verb open

    ProgramID: FirefoxHTML
    EXEFile: %ProgramFiles%\Mozilla Firefox 3.5 Beta 4\firefox.exe -requestPending -osint -url


    an xht markup file is a special file format and should only be edited and saved with the appropriate software.

    How to solve problems with XHT files

    • Associate the XHT file extension with the correct application.
    • Update your software that should actually open markup files. Because only the current version supports the latest XHT file format. Search, therefore, e.g. on the manufacturer website after an available Mozilla Firefox update.
    • To make sure that your XHT file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
    • Click here to open your .XHT file online - secure, fast, and no downloads needed.
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