what size should images be

Hi,

Can you provide us more details regarding your question? When you mean size do you mean the dimension of the image or the file size of the image? If you are referring to the dimension of the image, the images inserted inside the form is automatically re-sized depending on the size of the form. Please also provide to us the link or name of the form in question so we can further check the issue.

We will wait for your response.
Regards.