Convert HTM to EPUB — Free Online Converter
Convert HTML Document (.htm) to Electronic Publication (.epub) online for free. Fast, secure document conversion with no watermarks or registration.
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About HTML to EPUB Conversion
HTM files are web pages stored with the truncated three-character extension. EPUB (Electronic Publication) is the open standard for reflowable ebooks, used by Apple Books, Kobo, Google Play Books, and virtually every ebook reader except Amazon Kindle. An EPUB file is actually a ZIP archive containing XHTML content files, a CSS stylesheet, a navigation document, and an OPF package descriptor that lists all resources and their reading order.
Converting HTM to EPUB repackages web page content into a standards-compliant ebook that adapts to any screen size. The reflowable XHTML inside the EPUB respects the reader's chosen font, text size, and color scheme while preserving the structural hierarchy of the original HTML — headings, paragraphs, lists, and images all translate naturally into the ebook format.
Why Convert HTML to EPUB?
Publishing web content as EPUB makes it accessible to readers on dedicated e-ink devices like Kobo and PocketBook, tablet reading apps like Apple Books, and phone-based readers. EPUB's reflowable layout adjusts to portrait or landscape orientation and respects user accessibility settings like dyslexia-friendly fonts and high contrast. Unlike PDF, which preserves fixed page layouts, EPUB prioritizes readability across devices.
If you maintain technical documentation, blog posts, or educational content as HTM pages, converting them to EPUB creates downloadable offline reading packages. Self-publishing authors who maintain their manuscripts as HTML can convert to EPUB for distribution on the major ebook platforms.