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.

  • Profile Image

    How to increase the textbox width in matrix field?

    Asked by maureenjordan on June 12, 2017 at 11:37 AM

    I need the text box to fill the last column that reads, "What happened to the pet? If Deceased, what was their age and cause of death?". How do I do that? Thanks you. 



  • Profile Image
    JotForm Support

    Answered by aubreybourke on June 12, 2017 at 11:53 AM

    This is fully possible with some conditional logic

    I called the textbox "Value" and the Table "Table":

    You can see it working from this picture:


    My demo form URL:



  • Profile Image

    Answered by maureenjordan on June 12, 2017 at 08:33 PM

    Unfortunately this doesn't seem to solve my issue. I just need the text box width to fill the entire column (cell) as it does in the first 2 columns. It's just a matter increasing the text box width. 

  • Profile Image
    JotForm Support

    Answered by ashwin_d on June 12, 2017 at 10:33 PM


    Please inject the following custom css code in your form to increase the textbox width of matrix field:

    li#id_28 .form-textbox {

        width: 90%;


    The following guide should help you how to inject custom css code in form:  https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes

    Hope this helps.

    Do get back to us if you have any questions.

    Thank you!