Convert EPUB to HTML Online
Free, private EPUB to HTML converter. Your files never leave your browser. All processing happens locally on your device.
Drag & drop files here
images, PDFs, documents, audio, video, and more
No Server Uploads
FormatShift converts files directly in your browser. Your files never leave your device, so there's nothing to intercept or leak.
Instant Export
Files convert on your machine, so downloads are ready right away, even on slow connections.
High Fidelity
Good encoding keeps your files looking and sounding right, even at smaller sizes.
Built for Privacy
Your files are processed entirely in your browser. They never leave your device.
How to convert EPUB to HTML
Drop your EPUB file
Drag your file onto the converter above, or click to browse your files. Your files stay on your device.
Automatic conversion
FormatShift converts your file right in your browser using WebAssembly. No server involved, so your data stays completely private.
Download your HTML file
Once the conversion finishes, click the download button and you are done. The converted file is ready to use.
Why convert EPUB to HTML?
EPUB and HTML serve different purposes. Converting between them lets you use whichever format works best for your situation.
What is a EPUB file?
Electronic Publication: EPUB is the open standard for ebooks. Unlike PDF, EPUB content reflows to fit the screen, so it reads well on phones, tablets, and e-readers regardless of screen size.
Created by: International Digital Publishing Forum (IDPF), first released in 2007
Used for: Ebooks, digital publications, long-form reading
Technical details: ZIP-compressed package of XHTML content, CSS styling, and metadata. Content reflows to fit any screen size. Supports embedded fonts and images.
Compatibility: Supported by most e-readers (Kobo, Apple Books, Google Play Books). Kindle requires conversion to MOBI/AZW.
What is a HTML file?
HyperText Markup Language: HTML is the language that web pages are written in. Every website you visit is HTML at its core. As a file format, .html files are plain text documents that browsers know how to render.
Created by: Tim Berners-Lee / W3C, first published in 1993
Used for: Web pages, email templates, documentation, any content displayed in a browser
Technical details: Tag-based markup language. Supports text, images, links, tables, forms, and embedded media. Can include CSS for styling and JavaScript for interactivity.
Compatibility: Every web browser renders HTML. It is the most universally supported document format.
EPUB vs HTML
| Feature | EPUB | HTML |
|---|---|---|
| Type | Electronic Publication | HyperText Markup Language |
| Best for | Ebooks, digital publications, long-form reading | Web pages, email templates, documentation, any content displayed in a browser |
| Compatibility | Supported by most e-readers (Kobo, Apple Books, Google Play Books). Kindle requires conversion to MOBI/AZW. | Every web browser renders HTML. It is the most universally supported document format. |
| Pros | Reflowable text adapts to any screen, open standard, good for long reading | Universal browser support, can include rich media, easy to inspect and edit |
| Cons | Not supported by Kindle natively, less precise layout control than PDF | Requires a browser to view as intended, raw HTML is not as readable as Markdown |