Convert OPML to EPUB

OPML, or Outline Processor Markup Language, is a file format utilized primarily for outlining data structures. Initially developed in 2000 by UserLand Software, OPML was designed to facilitate the exchange of outline-based information between different software applications. Its uses have expanded over time, notably in organizing RSS feed lists and managing hierarchical data. The OPML file extension denotes XML-based documents that offer simplicity and interoperability in transferring structured information across diverse platforms. In essence, OPML serves as a versatile tool in the realm of data organization and syndication.

The EPUB (Electronic Publication) file extension is a widely utilized format for digital books and publications, leveraging its versatility across various e-readers and devices. Officially established by the International Digital Publishing Forum (IDPF) in 2007, it superseded the Open eBook standard. EPUB's structure allows for reflowable content, meaning text can adapt to different screen sizes, enhancing readability. It supports multimedia elements, such as images, videos, and interactive features, making it suitable for diverse digital publications beyond conventional eBooks. EPUB's adoption stems from its open standard, promoting broad compatibility and ease of access in the digital publishing landscape.