For those that actually want a SaaS type tool for this and don’t want to use Jotform, which is utterly horrible, I recommend Fillout, which has been a joy to us

For those that actually want a SaaS type tool for this and don’t want to use Jotform, which is utterly horrible, I recommend Fillout, which has been a joy to use and is seamlessly integrated with a bunch of services like AirTable and Dropbox and so on. Even if you do want to eventually build your own it’s ridiculously fast as a prototyping tool, can pre-fetch data and use conditional logic and accept URL parameters and all that out of the box.