You may remember an announcement made by Google several months ago that its indexing system now renders web pages more like a typical web browser.
As a direct follow up to that change, Google has just announced an update to one of its technical Webmaster Guidelines. The update specifies that, for optimal rendering and indexing, you should allow Googlebot access to the JavaScript, CSS, and image files used by your page.
Google warns against using robots.txt to disallow the crawling of Javascript or CSS files, saying that it directly harms how well Google’s algorithms render and index site content. This can result in “suboptimal rankings” the company says.
Read More: https://www.searchenginejournal.com/allow-googlebot-access-javascript-css-optimal-rankings/119113/
Author: Matt Southern
