JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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To my understanding, you are looking for the Embed Code of your form, is that correct?
You can get that from "Embed Form" Tool of the Form Builder page.
You can check out this guides that may help you also:
I hope this helps. Should you have any other questions, please feel free to open a new thread and we will be glad to help you anytime. Thank you.