Support for popular and niche ebook formats with fast, high-quality conversion.
Use on desktop, tablet, or mobile. No software required — everything runs in your browser.
We use 256-bit SSL encryption and auto-delete your files after conversion for maximum security.
EBook file formats are used to electronically store and display digital books on e-readers, tablets, smartphones, and computers. These formats enable readers to access books digitally, often with features like adjustable text size, bookmarks, annotations, and built-in dictionaries. EBook formats come in various types, each optimized for different reading experiences and devices. The most popular EBook formats include epub (widely supported open standard), mobi (originally for Mobipocket, now largely superseded), azw and azw3 (Amazon Kindle formats), and pdf (common for fixed-layout books). EPUB format is particularly popular because it supports reflowable text that adapts to different screen sizes, embedded fonts, images, and interactive features. Many EBook formats also support DRM (Digital Rights Management) to protect copyrighted content while allowing legitimate access.
Select the ebook file you want to convert. Upload from your computer or import directly from Google Drive or Dropbox.
Choose the format you need from the dropdown (100+ options available) and click Convert. You can process up to 5 files at a time with a maximum size of 1000 MB each.
Wait for the conversion to finish, then download your optimized ebook files. Converted files remain available for up to 5 downloads.
Browse the collection of dedicated converter pages for every ebook format we support. Each format converter offers optimized settings and supports conversions to and from that specific format, making it easy to find the right tool for your conversion needs.