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.
With JotForm Builder you can modify anything that you need to have it just the way you like it.
You also have the option of editing the field size directly
To change the Text Area size there is a similar option, called Collumns
I would suggest Louis taking a look at the following guide to see how to apply changes to fields over Form Designer: Video Course: Form Designer Basics