Is there a way to capture a screeshot image and include in form-without having to save the image first?

We have wishbox but unfortunately it is depreciated and currently not being actively maintained due to low demand so it is not working at the moment. I'm afraid we do not have any other tool that do such function. I suggest to add a file upload field in your form to at least enable your users to upload their screenshots.

Thanks!

By the way, if in case you mean take a photo then we have a widget for that. Check this http://widgets.jotform.com/widget/take_photo.