Opening OPML files

Did your computer fail to open an OPML file? We explain what OPML files are and recommend software that we know can open or convert your OPML files.

What is an OPML file?

OPML is an acronym for Outline Processor Markup Language. The OPML file format is used to exchange information between applications that run on different operating systems. The OPML format is based on an XML format developed for outlines.

The OPML file format was initially created by Radio Userland. It was developed to be the native file format for outliner applications. However, since its inception other programs have adapted the file format for other uses.

OPML files are commonly used to to exchange RSS subscription lists between different feed aggregators.

The original OPML file format has now been replaced by the more versatile OPML 2.0 file format.

Try a universal file viewer

In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.

By Prof. Jones (The File Expert)

Chief Content Editor and File Expert

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