Windows
Compatible Applications
What is a .opml file?
File Extension Details
Outline Processor Markup Language (OPML) is an XML-based file format designed for the exchange of outline-structured information between applications. Originally developed by UserLand Software, it has become the industry standard for managing lists of RSS feeds, podcast subscriptions, and hierarchical data structures. Because it is built on XML, it is platform-independent and human-readable, allowing users to export their entire subscription list from one news aggregator or podcast client and import it into another seamlessly. Beyond feed management, OPML is frequently used by outliner software to store structured notes, brainstorming hierarchies, and project task lists. Its tree-based structure allows for nested elements, making it highly efficient for representing complex, multi-level information architectures in a lightweight, portable format that is easily parsed by web services and desktop applications alike.
Software Compatibility
Programs that can open and work with .opml files
macOS
Compatible Applications
Linux
Compatible Applications
Mobile
Mobile Applications
Frequently Asked Questions
About .opml files
To open a .opml file, you need compatible software. Here are some options:
- FeedDemon
- Notepad++
- NetNewsWire
- Liferea
- Feedly
To convert a .opml file to another format, you can:
- Use compatible software Many programs that open .opml files also allow you to save or export them to different formats.
- Try online conversion services: Websites like Zamzar, CloudConvert, or Online-Convert allow you to convert files between different formats without installing software.
- Specialized conversion tools: Search for '.opml converter' to find tools specifically designed for this file type.
- Verify the file extension is correct:
- Update your software:
- Try alternative software:
- Check for file corruption:
Like any file type, .opml files can be safe or potentially risky depending on their source:
- Always scan files with antivirus software before opening
- Keep your operating system and applications updated.
- Be especially cautious with executable file types
Chat with AI about .opml files
Suggested Questions