Ebooks conversion
Convert MOBI to HTML
Updated Jul 2026
MOBI is the ebook format used by older Kindle devices, and HTML is the format every web browser reads. To convert MOBI to HTML, open the file in a converter and export it as HTML. Doing it on your own computer keeps the book's content off other people's servers.
- Extension
- .mobi
- Type
- Ebooks
- Typically
- Older Kindles
- Extension
- .html
- Type
- Documents
- Typically
- Web pages
Convert MOBI to HTML on your own computer. Nothing uploads.
How to convert MOBI to HTML
- Open Morphjet and drag in the MOBI file, or a whole folder of ebooks, that you want to convert.
- Choose HTML as the output format.
- Convert. The HTML file is written locally, right next to your original, and nothing leaves your machine.
MOBI vs HTML: what actually changes
| MOBI | HTML | |
|---|---|---|
| Opens everywhere | No, mainly older Kindle devices and a few e-reader apps | Yes, any web browser opens it |
| File size | Compact, built for e-readers | Similar, sometimes larger if images are embedded |
| Reading experience | Reflows to fit small e-reader screens | Reflows in a browser, but layout depends on the page's styling |
| Book metadata (title, author, cover) | Built in, and read directly by e-reader libraries | Not stored the same way, usually becomes plain text at the top of the page |
| Editing the text | Closed format, hard to edit directly | Plain text, opens and edits in any text editor |
When to convert, and when not to
Convert MOBI to HTML when you want to read an old ebook in a web browser, publish its text on a website, or move it off a device that's no longer supported.
Keep the MOBI file if you still use an older Kindle to read it, since HTML isn't a format e-readers open.
Why not just use an online converter?
Old MOBI ebooks are often files you bought or downloaded years ago, sometimes the only copy you have left, and some carry notes or bookmarks you've added over time. Sending one through an online converter means uploading that book, and whatever you've written in it, to a server you don't control. Converting on your own computer keeps the file there the whole time.
Questions
Does converting MOBI to HTML lose any content or formatting?
No. Text and chapter structure carry over accurately, since both formats store the book in a similarly plain, structured way. Very complex layouts from the original may need a little cleanup once viewed in a browser.
Will the HTML version keep the book's images?
Yes. Any images embedded in the MOBI file are carried over and referenced in the HTML output.
Can I open the HTML file on an old Kindle after converting?
No. Older Kindles read MOBI, not HTML. Keep the original MOBI file if you still use the device.
Does the HTML keep the book's title and author info?
Not in the same structured way. MOBI stores that as book metadata that e-reader libraries read directly; in HTML it typically becomes plain text, like a heading at the top of the page.
Can I convert MOBI to HTML without uploading the file anywhere?
Yes. A desktop app like Morphjet converts the file locally on your computer, so the ebook never has to travel over the internet.
Morphjet converts MOBI, HTML, and 1,800+ other formats, all on your machine. Launching this July.