We’ve made the first round of huge improvements on our recently released EPUB conversion API. Now you can upload either a plain HTML file or a Zip Archive and get back an EPUB with images, stylesheets and nested HTML or XML documents.
The converter also supports a host of new options including setting rights information, descriptions, language and more. Output is now nicely formatted by default, so you can more easily edit the results if you want. Image formats supported are JPEG, GIF, PNG and SWF. External CSS stylesheets are supported as well.