Google: do not block JavaScript and CSS files

Google has published an update to the technical webmaster guidelines. They recommend not to block JavaScript and CSS files because that can have a negative influence on the rankings of your web pages:

“Disallowing crawling of Javascript or CSS files in your site’s robots.txt directly harms how well our algorithms render and index your content and can result in suboptimal rankings.”

If you want to find out if your website has technical issues that can cause problems with Googlebot and other search engines, check it with the website audit tool in SEOprofiler:

Test your website with the audit tool

Johannes Selbach

Johannes Selbach is the CEO of SEOprofiler. He blogs about search engine optimization and website marketing topics at "".