RZ PowerPoint Converter Free Edition no time limit, but limits some functions and services, if you are statisfiled with RZ PowerPoint Converter, and would like to get more functions and the better service than Free Edition, you need to buy a license of Pro or Platinum Edition, then you could simply upgrade your Free Edition to Pro Edition or Platinum Edition.
How to Register RZ PowerPoint Converter Pro/Platinum Edition.
If you are using RZ PowerPoint Converter Free Edition, you will see below dialog when startup the program, and a "Upgrade button" will be always displayed on the Top Right corner of Free Edition and Pro Edition main window.
Upgrade your Edition, you could simply press "Yes" button on above "Upgrade?" dialog, or press "Upgrade" button on program main window, you will see below dialog.
Simply press "Get Key" button goto our official online store to purchase a License of RZ PowerPoint Converter Pro or Platinum Edition, once you have purchased it successfully, you will receive an e-mail containing your License Username and Key, it will look like below: