When you ask Google to fetch and render, its crawler will fetch all necessary resources so it can accurately render a page, including images, CSS and JavaScript.

All Web APIs (Application Programming Interface) supply code so that you don’t have to. They handle the intricate low-level details, allowi ...

Overloading Google's Fetch & Mobile Testing Tools With Too Many JavaScript & CSS Includes Mar 1, 2016 - 8:16 am 1 — by Barry Schwartz ...