Welcome to the File Converter

Upload your file to start converting. Choose a file from your device or use a remote file link.

${shortenFileName(item.file_name)} ${formatBytes(item.file_size)}

Output:

Add ${items.length} files

Convert

How to Convert Epub to AZW4?

Click the “Choose EPUB Files” button and select your EPUB file
Click on the “Convert” button to start the conversion
When the status changes to “Done”, click the "Download AZW4" button

Convert Any EPUB to AZW4

This tool supports converting many types of Epub to AZW4. Convert PDF, MOBI, LIT, AZW3, FB2, HTMLZ, LRF, OEB, TXT AND RTF to AZW4.

Best Epub Converter

Convert your Epub with perfect quality, size, and compression. Plus, you can also batch convert Epub using this tool.

Free & Secure

Our Epub Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically delete after a few hours.

What is an EPUB file?

EPUB is an open eBook format developed by the International Digital Publishing Forum (IDPF), widely supported by many eBook readers and software. It is based on XML and ZIP technologies, offering dynamic formatting, cross-platform compatibility, and rich multimedia support, making it suitable for creating high-quality eBook content. Compared to traditional formats like PDF, EPUB provides better readability, especially on devices with different screen sizes, as it can automatically adjust text layout to fit the screen size. Additionally, EPUB files often include metadata (such as author, title, chapter information, etc.), facilitating management and search. It is widely used in the publishing industry and personal creation, suitable for novels, textbooks, magazines, and various types of eBooks.

Developed by: International Digital Publishing Forum (IDPF)
Initial Release: 2007
Useful links:

https://en.wikipedia.org/wiki/EPUB

https://www.adobe.com/solutions/ebook/digital-editions.html

https://calibre-ebook.com/

What is an AZW4 file?

AZW4 is an advanced eBook format developed by Amazon, specifically designed for Kindle devices and apps, widely used in Kindle 4 and later models. It typically includes higher levels of digital rights management (DRM) protection to ensure content security and copyright protection. Compared to traditional formats like AZW or MOBI, AZW4 offers more advanced features and a better reading experience, supporting complex layouts, multimedia elements, and interactive features. It is suitable for creating high-quality eBook content, especially for publications requiring strict copyright protection. It is widely used in the publishing industry and personal creation, suitable for novels, textbooks, magazines, and various types of eBooks.