The interface is very easy to use. I can easily drag and drop any file into the converter and have it converted in just seconds. It's free. There is no limit of how many times you can convert your files. If you have a lot of files to convert, then there are some features that are not as intuitive. For instance, if you want to change the output folder, you must click "edit" and then change the location. This should be made easier. It does the job well though. I would recommend this product to anyone who needs to convert their files. We use it to convert our company's documents to pdf so they are searchable.