How to submit data from external page to existing Qualtrics survey?

Are you aware of the product Site Intercept from Qualtrics? This will do what you're asking with way less hassle :)

Sounds good. The prices aren't listed on their website, though, which means it's probably quite expensive. I'm not sure it's actually less hassle to ask my (public university's) business office to make a big purchase for one small experiment. I have programming skills; isn't there any way to do this with the API?

Hello @aberry3 , You can use below code in your website <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script> <!-- jQuery Modal --> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-modal/0.9.1/jquery.modal.min.js"></script> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jquery-modal/0.9.1/jquery.modal.min.css" /> <div style="width:inherit;height:90%" id="ex1" class="modal"> <iframe style="width:inherit;height:inherit;"allowfullscreen src="YOUR_SURVEY_URL"></iframe> <a href="#" rel="modal:close">Close</a> </div> <!-- Link to open the modal --> <p><a href="#ex1" rel="modal:open">Visit website</a></p> See the demo here

Thanks guys; these solutions were simple (perhaps even obvious, so obvious that I didn't think about them, lol). They seem to work fine. Much obliged.