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.
It should work when you open the PDF file in a PDF reader program like Adobe Reader.
Here's a screenshot of the web form:
Now look at the screenshot when I open the fillable PDF in Adobe Reader.
As you can see, there is a red border box on the text boxes indicating that it is a required field. The fillable PDF form cannot be submitted if these fields are blank.
In Google Chrome, there is * or red border. It just a regular text box but if the required text box is empty, you can't submit the form.
Hope that helps. Thank you.