Automatization tools, where to start?

Quite often I have a repetitive task to do - go to the specific website, use their filters, and then gather it's output in one single .pdf file. All of that, needs to be repeated at least on 3 different websties.

And now I'm wondering - can I somehow automate this process? I'm wondering if for something like this, a WebScrapper is a primarry "go to" solution, or are there any simpler or ready to use approaches / tools?

Thanks in advance, cheers.