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.
Do you mean you want to add an image as a header for your form? The dimensions of the header would depend on the size of the image that you add. You can change the dimensions of the image by clicking on the image then setting the width and height based on your preference.
If you need further assistance, do let us know.