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"JotForms as a collection of forms?" I am not sure if I have understood your question correctly.
I would suggest you to please explain your requirement a bit more in detail and we will surely help you. You may also like to share a screenshot of what you are trying to achieve which will help us understand your requirement better. The following guide should help you on how to upload image in forum post: http://www.jotform.com/answers/277033
We will wait for your response.