To give Filestar a try is free and there is no need to register initially. At first, you get 5 free conversions. After that, when you register you get 10 more free of charge per month. Once you have used all your free credits you can sign up for a subscription.
You need to register at Filestar for two main reasons.
First, you need to have an account in order to get your second batch with the 10 free conversions stored somewhere. Your account will also help you keep track of current conversion credit status so that you know how many you have left.
Secondly, we always strive to give you the best experience with Filestar. And we aspire to help you explore how to take your desktop productivity further. To do so we are happy to occasionally send you emails with tailor-made content or software updates. But don't worry, we won't bother you unless we think you will really benefit from it.