I'm a bit confused... (so please explain)..
Why?
If you need a webserver anyways... what is the benefit of using an Arduino/ESP8266..etc?
Why not just have the same PHP program on your web server reach out and scrape?
Also.. your 'scrape' seems very particular? name/phone/email.. your scraping conditions/criteria would most likely need to be tweaked for each use...no? (maybe I'm not understand it all correctly?)..
Are you scraping (taking inventory) of a whole site? ie: all its source code/markup? or just specifically targeting DOM elements from know sites you plan on scraping?
Maybe point out WHY this is a good idea to use? Or why to use this over a regular web app?
I see you posted this:
"boards aren't running Javascript"... which is ok.. but now-a-days most sites wont allow you to do much WITHOUT having javascript enabled..
example article:
There are already many headless/browserless devices out there that scrap pages..etc..