Is there a way to specify username/password credentials before a scraping run?

I want to know how to specify user name and password credentials to log into a site before a scraping run. In other words, can the plugin fill in simple forms at the outset of a scraping run, to gain access to the website's contents?

Please, surely, this is a very common scenario - I don't even know how anyone is using this with password secured websites. Surely someone must have a solution? It's so fundamental, you would've thought it'd be in the plugin/app specifications for Web Scraper...

Is this solved, i cant find a solution.

You can try using another extension for autofilling, there are quite a few: