I am trying to develop something(not sure yet) that fill up online form with my own custom data custom data. The form in which I want to auto fill inputs is only loaded through post request from home page. If I tried to open the page directly through GET request i.e. through URL, form does not loads completely. And if I tried to make post request through my application to the page it throws CORS issue and I do not have access to server to resolve this issue.
I tried making post request to the page with some parameters and what it ended up with is CORS issue. I have heard about crawler but I am not sure whether it does same as I have expected.
What may be the solution in this case? I am not still sure whether it is good to go with web app?