HTMLZ is an eBook file that is compressed as ZIP file. An HTMLZ file may contain HTML files, text, images and metadata.opf file. It is an archive of eBook where every data is compressed. Instead of separate CSS files, Inline CSS codes can be written in HTML files.
AZW3 is an eBook file that is developed by Amazon. It is used in Amazon Kindles to view eBooks. Moreover it also supports some advanced features like HTML5 and CSS3. It is a proprietary tool that can be viewed only in Amazon eBook previewer or Amazon kindles.
+200 Formats Supported
CloudConvert is your universal app for file conversions. We support nearly all audio, video, document, ebook, archive, image, spreadsheet, and presentation formats. Plus, you can use our online tool without downloading any software.
Besides using open source software under the hood, we’ve partnered with various software vendors to provide the best possible results. Most conversion types can be adjusted to your needs such as setting the quality and many other options.
Our API allows custom integrations with your app. You pay only for what you actually use, and there are huge discounts for high-volume customers. We provide a lot of handy features such as full Amazon S3 integration. Check out the CloudConvert API.