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.
Any size will do. The size can be changed in the form designer. Either in the form header settings or if you will be using our Image tool from the Form Tools section.
I am also looking for the answer to this question.
JotForm: What is the _ideal_ size? "Any size will do" is not an answer at all!!
We can not tell a certain size such as "200px". It can depend on the form, the image or a person. Also, it can depend on the header size, too.
You need to test on your form and decide which size and the image look more convenient, you can use that.