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OPML
Filename extension
.opml
Internet media type
application/xml, text/xml, text/x-opml
Uniform Type Identifier (UTI)
org.opml.opml
UTI conformation
public.xml
Developed by
UserLand
Type of format
Outliner
Extended from
XML
Website
dev.opml.org
OPML (Outline Processor Markup Language) is an XML format for outlines (defined as "a tree, where each node contains a set of named attributes with string values"[1]). Originally developed by UserLand Software as a native file format for the outliner application in its Radio UserLand product, it has since been adopted for other uses, the most common being to exchange lists of web feeds between web feed aggregators.[2]
The OPML specification defines an outline as a hierarchical, ordered list of arbitrary elements. The specification is fairly open which makes it suitable for many types of list data.
Support for importing and exporting RSS feed lists in OPML format is available in Mozilla Thunderbird[3] and in most other RSS reader web sites and applications.[2]
^"OPML 2.0 Specification". Retrieved 18 March 2014.
^ abFisher, Tim (12 March 2022). "How to Open, Edit, and Convert OPML Files". Lifewire. Retrieved 5 July 2023.
^"How to Subscribe to News Feeds and Blogs | Thunderbird Help". support.mozilla.org. Retrieved 11 June 2019.
OPML (Outline Processor Markup Language) is an XML format for outlines (defined as "a tree, where each node contains a set of named attributes with string...
build upon the concepts found in OPML, with the goal of fixing some of its limitations. OML has a structure similar to OPML. Its advocates claim that although...
weblogs." In 2000 Winer developed the Outline Processor Markup Language OPML, an XML format for outlines, which originally served as the native file format...
can also import and export a blogroll from and to OPML; however, it cannot import Google Reader OPML at this time due to a known bug.[citation needed]...
nested markup OPML - simple XML-based format designed for outlines, but also used for syndication feedlists OML - alternative to OPML RDF - (various...
(see uses) TA1998: Terminologia Anatomica 1998 on FIPAT site self-contained OPML and OmniOutliner files and Macintosh application - unofficial Wikidata has...
UserLand's products, Manila and Radio UserLand, as well as Dave Winer's OPML Editor, all of which support the UserTalk scripting language. UserLand eventually...
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communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
that can be integrated into larger programs, they allow users to aggregate OPML files, email services, documents, or feeds into one interface. Many customizable...
MultiMarkdown (MMD) and Markdown Extra (PHP Extra) variants OpenDocument (ODT) OPML Office Open XML: Microsoft Word variant Org-mode reStructuredText Textile...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
including RSS/RDF and Atom and can import and export subscription lists in OPML format. Liferea is intended to be a fast, easy to use, and easy to install...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
a description, respectively). import and export subscription lists as an OPML file. search in all feeds, across all updates from subscriptions. Users could...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
XHTML Outlines), an XML microformat for outlines built on top of XHTML. OPML (Outline Processor Markup Language), an XML format for outlines. "The XML...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
communication Livemark Mashup Referencing RSS editor RSS tracking Streaming media Standard OML OPML RSS Advisory Board Usenet World Wide Web XBEL XOXO...
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