JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
There are two way to make it happen. Please go to your form builder dashboard and in "Basic Field" section, you'll see "Image" field. You can upload and edit your photos from here as you wish.
Your second alternative's the image radio buttons widget. You can find it from "More Fields". Please type the widget's name in the search widgets area. Or here is the image radio buttons link. Or from here you can benefit from any other useful widgets for you such as image slider etc.