All about XFO Files

The XFO file type is primarily associated with LonMark.

XFO	File extension: XFO
	File type:	Optimized Device Interface File

What is an XFO file

XFO files mostly belong to LonMark by LonMark International. LonMark International is a global membership organization created to promote and advance the business of efficient and effective integration of open, multi-vendor control systems utilizing ANSI/CEA 709.1 and related standards.

How do you open XFO files?

You need a suitable software like LonMark to open an XFO file. You need a suitable software like LonMark from LonMark International to open an XFO 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 XFO file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a XFO file directly in the browser:. Just drag the file onto this browser window and drop it.

Online XFO Text Viewer

Choose your .xfo file to analyze

or drag and drop it here

Online File Viewer

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Can't Open Your .XFO File? Try These Steps

Because .XFO files can originate from different programs, they aren't universally openable.

Identify the Source: If received from a building automation engineer, it's likely a LonMark Optimized Device Interface File. If from a developer, it may be an XSL Formatting Object.
Check the Header: Inspect the first bytes in a text or hex editor:
- <?xml indicates a readable XML-based document.
- Unreadable binary suggests a compiled LonMark device file.
Use the Original Software: The original program is usually required; try LonMark tools, Apache FOP, or ask the sender if uncertain.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable text/metadata, and preview when possible.

Technical Data for XFO File Extension

Related files:

xf0, xfb, xif

an xfo Optimized Device Interface File is a special file format by LonMark International and should only be edited and saved with the appropriate software.

How to solve problems with XFO files

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