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.
I have inspected the form through page analyzer and found that it seems normal and loading at good speed.
As per the screenshot, the first part on CSS is based on the versions that needs to be loaded and cannot be changed and the images below are hosted using Amazon services.
Since JotForm is a web based service and it needs to load some essential resources from JotForm servers. It's normal to see these minor suggestions when analyzed and not that critical.
Please get back to us if you need further assistance. We are happy to assist you.