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

    Form iFrame height is not stable in Firefox

    Asked by EpicStudio on November 05, 2014 at 04:51 PM

    Hi there. I have the same problem. I already tried an augment on the iframe style height tag, removing the <script></script> from the iframe code, and alsao adding a 100px padding; but from time to time, every other time you load my page http://grupoimaginarq.com/contacto/ the form seems to crop vertically. Gladly I allowed the scrolling to avoid losing the chance to use it, but certanly it's not the result I expected from it.

    Note: it only happens randomly when you load the page, and only on firefox.

    Thanks for your help.

  • Profile Image

    Answered by raul on November 05, 2014 at 06:11 PM


    Upon checking your site, I was able to see the form correctly using Firefox.

    Since you say that this happens randomly, I would keep an eye on the parent divs that you use to contain the iframe of the form. I mean when this happens you can use the Inspect Element in your browser and check the height of these divs to see which one is shrinking.

    Please let us know if you need further assistance.
    Thank you.

  • Profile Image

    Answered by EpicStudio on November 05, 2014 at 07:01 PM

    Sometimes work, sometimes not. I’ll send you a screen capture.

  • Profile Image

    Answered by EpicStudio on November 05, 2014 at 07:11 PM

    Here’s the screen capture.

  • Profile Image

    Answered by raul on November 05, 2014 at 08:07 PM


    I'm sorry but your screenshot didn't came trough.
    Please follow this guide to add a screenshot to this post: https://www.jotform.com/answers/277033-How-to-add-screenshots-images-to-questions-in-support-forum


  • Profile Image

    Answered by EpicStudio on November 06, 2014 at 01:37 PM

    Here is it.


  • Profile Image
    JotForm Support

    Answered by Mike_T on November 06, 2014 at 03:06 PM

    You have two iFrame based forms on the web page, and the second iFrame comes with the auto-height script part.

    Please remove the script part that is following the second iFrame to see if that helps. Thank you.