OPML

Basic information about OPML file

When there is a problem with opening files with the file extension OPML（*.OPML or *.opml）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the OPML file yourself.

There are 1 file types using the OPML file extension in our database. In the further part of this page, you will find detail information about all the OPML file with their brief description and a list of programs that support OPML file sorted by operating systems. The table below provides useful information about the OPML file extension. It answers questions such as:

What is the OPML file?
How to open a OPML file?
What programs do I need to open a OPML file?
What programs help to create and edit a OPML file?
How to convert OPML files to another file format?
How to convert another files to OPML file format?

1.Detail information about OPML file extension: Outline Processor Markup Language File

Software programs that will open, edit or convert OPML files
File type	Outline Processor Markup Language File	Category	Web Files
Developer	The Omni Group	File format	XML
Description	OPML file is a Outline Processor Markup Language File developed by The Omni Group. Outline document written in OPML (Outline Processor Markup Language); used to exchange lists of Web feeds (such as .RSS files) between Web feed aggregators; also used for other general outlining purposes.
Windows	CS Odessa ConceptDraw MINDMAP OPML Editor Natara Bonsai Tkoutline FeedDemon Microsoft Outlook Microsoft Windows NotePad NotePad++ RSSOwl
macOS	The Omni Group OmniOutliner 4.5 CS Odessa ConceptDraw MINDMAP OPML Editor Circus Ponies NoteBook Tkoutline NetNewsWire TextEdit
Linux	gedit

Can't open a OPML file?

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

”Can't open this file: example.OPML”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the OPML extension without any issue.

Where I can download the application that support OPML file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.

How to change file associations?

Right-click a file with the extension whose association you want to change, and then click "Open With".
In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
Select the ”Always use the selected program to open this kind of file” check box.

Can I change the extension of OPML files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.

What else may cause problems width open a OPML file?

The reasons for the lack of the ability to open a OPML file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a OPML file. If there is still something wrong, you might want to check:

Whether the OPML file is damaged.
Whether the OPML file is incorrectly linked in the registry entries.
Whether the OPML file extension has been accidentally removed from the Windows registry.
Whether the installation of an application that supports the OPML file format is incompletely.
Whether the OPML file is infected.
Whether the drivers of the equipment used for opening a OPML file are up to date.
Whether your computer has enough hardware resources to open a OPML file.

If the OPML file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.