Google’s Mueller Says Some JavaScript Resources Can Be Blocked

Google’s John Mueller says there is a specific situation in which website owners can use robots.txt to keep certain resources from Googlebot. The comments, reported by Search Engine Journal, concern some JavaScript resources rather than a general recommendation to block them.

The distinction matters because the supplied summary describes Mueller’s answer as conditional. It does not identify the particular circumstances behind his response or explain which resources were involved. Marketers should therefore avoid treating the statement as permission to block JavaScript resources in every situation.

The summary also does not provide Mueller’s full explanation, a direct quotation or instructions for applying the approach. Those details would be important for understanding the question he was answering and the limits of his advice. Readers seeking to apply it should consult the full Search Engine Journal report before making a decision.

For marketing teams, the news is best read as a reminder to distinguish a specific technical use case from a broader SEO recommendation. The available description establishes that Mueller considers blocking acceptable in one context; it does not establish that doing so will produce a particular search outcome.

It also leaves open practical questions, including which JavaScript resources were being discussed and why someone might want to prevent Googlebot from accessing them. The supplied summary does not answer those questions, so it cannot by itself support a detailed checklist or a change to an existing website configuration.

What this means for marketers

Review the complete report and its use case before acting on the headline. If a proposed robots.txt change involves JavaScript resources, discuss the specific circumstances with the people responsible for the site’s technical setup. Mueller’s reported comment supports a limited possibility, not a blanket rule for marketing teams.