How to convert HTML to MOBI
- Add your .HTML file - drop it in the box above or click to browse.
- Convert it to .MOBI in a few seconds.
- Download your new .MOBI file.
What to expect
- MOBI is reflowable and built on older, simplified HTML, so modern CSS layout and web interactivity are not preserved.
- Scripts, forms, and embedded media are dropped; text, basic structure, and images remain.
- MOBI has been retired by Amazon for new Kindle delivery, so EPUB is often the more future-proof target.
Frequently asked questions
How well does HTML convert to a MOBI e-book?
calibre turns the page's text, headings, lists, links, and images into a reflowable Mobipocket e-book. Fixed web layout and precise CSS styling are not preserved, since MOBI wraps simplified HTML for e-reader display.Why convert HTML to MOBI?
MOBI was the format used by early Kindle devices, so the conversion targets older Kindle hardware and apps. For current Kindle workflows, EPUB is generally the better target, as Amazon retired MOBI from Send to Kindle in 2022.
Where does a MOBI file open?
Older Kindle devices and the Kindle app can read DRM-free MOBI, and Calibre or FBReader open it on desktop. Newer Amazon delivery paths no longer accept MOBI, favoring EPUB instead.
What is lost converting HTML to MOBI?
JavaScript, forms, and interactive or video content are dropped, and MOBI's underlying markup is older and more limited than modern HTML, so advanced styling is flattened. Images are retained inside the file.
