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.opml

File Type Outline Processor Markup Language File IconOutline Processor Markup Language File
File Format Standard (developed by The Omni Group)
Usage Open manually
Popularity ★ ★ ★ ★ ☆  Common
Description

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.

Each OPML file contains the following XML elements:

  1. OPML version - e.g. "1.0"
  2. Head - contains metadata that describes the content
  3. Body - contains the content of the outline
  4. Outline - contains a line in the outline
Open With
Windows

IconCS Odessa ConceptDraw MINDMAP

IconCorel MindManager

IconTkoutline
macOS

IconThe Omni Group OmniOutliner

IconCS Odessa ConceptDraw MINDMAP

IconCorel MindManager
Published 2007
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Information from the PC File Extensions Reference
https://pc.net/extensions/opml
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