OPML File — Open & Convert .opml Online
What Is a .opml File?
OPML (.opml) is a document file format. Outline Processor Markup Created by Dave Winer, this format is essential for writers, students, and office workers.
How to Open .opml Files
Upload your .opml file to OpenAnyFile and instantly read and annotate it in your browser. No software installation required. Works on Windows, macOS, Linux, iPhone, and Android.
Everything About OPML Files
Popular OPML Conversions
Frequently Asked Questions
What is a .opml file?
A .opml file is a document format called OPML. Outline Processor Markup
How do I open a .opml file without installing software?
Upload your .opml file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .opml files?
.opml files are typically created by Dave Winer.
Can I convert .opml to another format?
Yes. OpenAnyFile converts .opml to XML, JSON, HTML.
Is it safe to open .opml files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .opml on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.