Googlebot Cannot Access CSS and JS Files


Many website owners have recently received an email from Google with the title, “Googlebot cannot access CSS and JS files”.

It doesn’t matter whether you’re running WordPress, Drupal, Joomla or another platform entirely. Google has sent these emails to 100,000’s of sites.

I’m going explain the issue that Google is complaining and how you can resolve it.

What is the email that Google is sending out?

Google Webmaster Tools has been sending out this notification to sites:

Google systems have recently detected an issue with your homepage that affects how well our algorithms render and index your content. Specifically, Googlebot cannot access your JavaScript and/or CSS files because of restrictions in your robots.txt file. These files help Google understand that your website works properly so blocking access to these assets can result in suboptimal rankings.

Here’s what the email looks like:


What does the message mean?

This message is all about Google’s new focus on responsive design.

Your robots.txt file is telling Google not to use some of your CSS and/or Javascript files.

Google now needs these files to test your site for mobile friendliness. Without them, your ranking will go down. We covered almost exactly the same problem back in April during Google’s “Mobile Armageddon”.

What is the solution?

Go to Google’s Mobile-Friendly Test and check your site. Here’s a screenshot of a site that’s received Google’s e-mail.

Thankfully, Google’s tester is very informative and points out the exact issue for this particular site. It’s that the robots.txt file is blocking Google from accessing the resources it needs.

You can find the exact resources that are blocked by Google by clicking on the “Show resources” link on the right-hand-side of Google’s tester Compare the files there to your robots.txt to determine what needs unblocking.

How to fix the problem

The solution will depend on the CMS you use, because each platform stores CSS and Javascript files in different locations.

Test your site again

After saving your robots.txt file, go back to Google’s tester and run another test. If Google shows that your site is mobile-friendly, you’ve likely fixed the problem.


  • Nick Savov

    Nick is the Director of Support at OSTraining and you can find him in almost every area of the site, from answering support requests and account questions to creating tutorials and software.

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Mike Carper

The best option is to enable css/js aggregation on the “admin/config/development/performance” under bandwidth optimization.


Thanks Mike. That’s good advice, and I suspect most Drupal sites do it anyway.
So far, I’ve heard more complaints from WordPress users about this Google email.

manan rana

After Mobile -friendly test pass not cache by google than what to do ?

Anna Robinson

Thank you for being so quick about solutions to Google never ending complications ๐Ÿ˜‰
I still have problem with Google complaining about not having access to CSS and .js in cache though. What to do? Is it safe to remove the following line in the robots.txt and would that help?
Disallow: /cache/

Anna Robinson

Oh Nick, You’re a star! Thank you so much ๐Ÿ™‚

f c

When I fetch and render it is showing partial. It looks fine. The same way google sees it is the same way visitors see it.
The reason for this is that I’ve added buysellad codes in a widget onto my sidebar and footer. When I remove it it’s perfectly fine. I’m not blocking anything in my robots.txt. Is it normal that google can’t access external scripts? Please I don’t want to get penalized or I don’t want my rank to drop? What do I do? Do i leave the buysellad codes?
S.N I’m using the thesis promo theme.


Thank you!


I get the “Awesome!” assessment and the rendering is perfect, but it complains that 23 resources could not be loaded. They are all images that are in folders that aren’t blocked. Why can’t it load them and why do they render just fine?

rohit patel

How to fix the problem in magento ?


The Mobile Friendly Test result unstable for my website.
I have reviewed and allow all css files in robots.txt, but sometimes it still cannot fetch css file, with status “other error”.
Can you have a look and give me any advice?
For example:

Would love your thoughts, please comment.x