About eBook Conversion Software
There are a great many applications for sale today that promise to convert existing print or .pdf book files into eBooks. Unfortunately the limitation of such attractive offers is due to the wide range of the types of file formats of existing books and their variety of styles, formatting, and requirements. The "one-size fits all" automatic conversions rarely produce eBook files that can pass today's strict industry standards.
An eBook can appear fine on a particular device, but still have numerous errors in the embedded code that can cause unexpected and sometimes disastrous results on other devices. This is why a validation standard has been set. Large eBook distributors such as Overdrive check all publishers' files to make sure they adhere to industry standards.
If you would like to try doing your own conversions, you might wish to upload your files to a company called ThreePress that offers a free validation test for your files.