You don't have to build a ZIP archiver from scratch. Several high-quality libraries handle the heavy lifting:
: Convert your blog's HTML into EPUB 3 XHTML documents. This usually involves stripping out scripts or non-standard tags that e-readers can't handle.
If you're building your own script, here is the general logic used by most open-source tools:
If you're not looking to write a custom script today, there are excellent existing tools to bridge the gap: Generating an EPUB File in the Browser - Jim Nielsen's Blog
: Script the conversion of hundreds of posts in seconds.
: Every EPUB needs a container.xml and an .opf file to tell the reader where the chapters are and who wrote the book. Libraries like @smoores/epub for Node.js are built specifically to manage these requirements. Beyond Coding: No-Code Alternatives
: This library uses a "template" approach, gutting a sample EPUB and refitting it with your specific content and metadata.