When I look at my form on an iPhone the HB logo which is a PNG file displays very small.

When I look at my form on an iPhone the HB logo which is a PNG file displays very small.  In the Preview Form section (and Everywhere else) the logo looks normal in the test display.

I just checked your form(https://form.jotform.com/90205376300143) in an iPhone 8 emulator, and the HB logo displays fine:

What iPhone device are you using?

Yes, I know.  It displays it everywhere including the emulator except for through the safari browser.   If you got to www.hbhsgirlssoccerbbq.com you can see what I'm talking about.  Works on a desktop, works on iPad Pro, but not on an iPhone 7+, iPhone 6, 6+ or X.   It makes the logo very very very small.

After testing your site, adding the meta tag seems to fix the issue. Please add "<meta name="viewport" content="width=device-width, initial-scale=1">" below other meta's in your form's source code.

If adding the meta tag didn't help. Try adding this CSS code into your form.

@media only screen and (min-width: 414px) {

#cid_1 > div > div > div.header-logo {

    width: 309px !important;

    height: 302px !important;

}

}

I hope that helps. Let us know if you have any questions or if you need further assistance. 

 I'm sorry, how do I access my forms source code?

The meta tag should be added to your web page's source code, so basically you only need to have access to the html file of the page where you're embedding your JotForm form.