>> OPML file

OPML file format description

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

1 filename extension(s) found in our database.

.opml - Outline Processor Markup Language File

The OPML document files are related to OPML Editor. OPML file is an Outline Processor Markup Language file. It is an XML-based format that allows exchange of outline-structured information between applications running on different operating systems and environments. Originally developed by Radio UserLand as a native file format for an outliner application, it has since been adopted for other uses, the most common being to exchange lists of web feeds between web feed aggregators.

OPML Editor
Document files
- / -
Outline Processor Markup Language File related extensions:
RLPlot Document
KeyCAD Drawing Document
ScanVec CASmate Sign
Opal Outline Document
Zenographics ZjStream SuperPrint Zj Stream
CADViewer Redline Markup

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

Can't open a .opml 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 .opml file extension is often given incorrectly!

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

oml, opl, opm, pml, ppml

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

TracePro Model
OtsAV Media Library
Palm Markup Language File
Personalized Print Markup Language Document
OpenPanorama Lensflare File
Quadrox Digital CCTV System Components Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, 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 .opml file format, then write to us!

Please help us by rating this page below.

4/5 based on 15 reviews.
Thanks for rating!
Invalid rating.