We accept standard EPUB files for ebooks. For the best reading experience across all devices, ensure your file is properly formatted with a clickable table of contents. We provide basic formatting guidelines and check tools during the upload process.
EPUB (short for “electronic publication”) is the most widely used, open-standard file format for digital books (eBooks) and documents
. It is designed to be reflowable, meaning the text automatically adjusts to fit the screen size of the device, making it ideal for everything from 3.5-inch smartphone screens to large tablet displays.
While EPUB is the industry-standard, reflowable format for most e-readers (Kobo, Apple Books, Nook), several other file types are recommended for ebooks depending on the device and content type.
Key Recommended Ebook Files (Alternatives to EPUB)
- AZW3 (Kindle Format 8/KF8): Amazon’s modern standard for Kindle devices. It supports advanced formatting, fonts, and reflowable text.
- KFX (Kindle Format X): The newest proprietary format for newer Kindle devices, offering superior typography, hyphenation, and layout.
- PDF (Portable Document Format): Essential for fixed-layout content (e.g., textbooks, technical manuals, graphic-heavy books). It keeps the exact formatting, though it does not adjust well to small screens.
- KPF (Kindle Package Format): Amazon’s proprietary file created with “Kindle Create” software, recommended for ensuring perfect formatting on Kindle devices.
- CBZ/CBR (Comic Book Archive): Specifically designed for digital comics, graphic novels, and manga, consisting of images compressed into a single file.
- FB2 (FictionBook): An XML-based, DRM-free format popular in parts of Eastern Europe, known for its portability and structured content.
Summary of Recommendations
- For General E-readers (Kobo, Nook, Apps): Use EPUB (or EPUB3 for multimedia).
- For Amazon Kindle: Use EPUB (which Amazon converts to AZW3/KFX) or upload KPF for maximum compatibility.
- For Textbooks/Fixed Layouts: Use PDF or Fixed-Layout EPUB.
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The Jack Dickson Dossier
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Barefoot on Grapes: A Naked Vintage of Love and Freedom
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The Midnight Compass
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