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.
Where can I change my form question property width and height?Asked by lerhyc on November 14, 2014 at 09:13 AMAdd links to your images here and separate them with a new line. Make sure that your image width and height must be the same with the form question property width and height."
You can change your form question property width and height through either CSS or iFrame when you embed your code.
Here is a reference.