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What is an OPML File?

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Question: What is an OPML File?

Did you find an OPML file on your computer and wonder what program should open it? Maybe someone emailed you an OPML file but you're not sure how to use it. Perhaps you tried to open the OPML file but Windows told you that it could not open it.

Before you can open an OPML file (assuming it's even a file format that's intended to be viewed or edited), you'll need to determine what kind of file the .OPML file extension refers to.

Answer: A file with the OPML file extension is an Outline Processor Markup Language file.

Other types of files may also use the OPML file extension. If you know of any additional file formats that use the .OPML extension, please let me know so I can update this information.

How To Open an OPML File

The easiest way to open an OPML file is to double-click on it and let your PC decide which default application should open the file. If no program opens the OPML file then you probably don't have an application installed that can view and/or edit OPML files.

Warning: Take great care when opening executable file formats received via email or downloaded from websites you're not familiar with. See my List of Executable File Extensions for a listing of file extensions to avoid and why.

OPML files are typically used as import/export files for RSS feed reader programs. Almost any program that manages RSS feeds should be able to import OPML files and export OPML files.

If you find an OPML file online and would like to see what's in it, there's a tool called OPML Viewer that will do just that.

Tip: Use Notepad or another text editor to open the OPML file. Many files are text-only files meaning no matter the file extension, a text editor may be able to properly display the file's contents. This may or may not be the case with OPML files but it's worth a try.

If you find that an application on your PC does try to open the OPML file but it's the wrong application or if you would rather have another installed program open OPML files, see my How To Change the Default Program for a Specific File Extension guide for making that change in Windows.

How To Convert an OPML File

There are two main ways to attempt to convert an OPML file to another file type:

The first option involving opening the OPML file in its native program is preferable because it's both easier and will probably result in a more accurate file conversion. Of course if you don't have a program that opens OPML files, a third-party file conversion tool (the second option) could be very useful.

Important: You cannot usually change a file extension (like the OPML file extension) to one that your computer recognizes and expect the newly renamed file to be usable. An actual file format conversion using one of the methods described above must take place in most cases.

Still Having Problems Opening or Using an OPML File?

See Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more. Let me know what kinds of problems you're having with opening or using the OPML file and I'll see what I can do to help.

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