What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
Unfortunately, you cannot insert a Facebook pixel code on your form. According to Facebook guide, the pixel code should be inserted in the head element. The form doesn't allow you to add or insert any script code inside the head element.
You can use the Thank You page redirect to a custom URL where the Facebook pixel tracking code is. You just need to create a page, put the pixel on it, and then upload it to your web server. After that, you can redirect the Thank You page to that file.
Hope that helps. Thank you.