W3C_CSS_Validator

Last updated 16 hours ago.

W3C_CSS_Validator is a developer helper operated by W3C. It's not currently known to be artificially intelligent or AI-related. If you think that's incorrect or can provide more detail about its purpose, please contact us. Set up Dark Visitors agent analytics to see how often W3C_CSS_Validator visits your website.

Detail

Operator

W3C

Type

Developer Helper

Used by developers to test website functionality

Expected Behavior

Developer helpers generally visit websites on direct behalf of a user who is evaluating some feature or attribute. Visits can be one-off or part of a larger crawl.

Analytics

Visits to Your Website

Half of your traffic probably comes from artificial agents, and there are more of them every day. Track their activity with agent analytics.

Set Up Agent Analytics

Other Websites

0% of top websites are blocking W3C_CSS_Validator

Learn How →

Robots.txt

Should I Block W3C_CSS_Validator?

Probably not. Developer helpers are normally used to optimize or find problems with your website.

How Do I Block W3C_CSS_Validator?

You can block W3C_CSS_Validator or limit its access by setting user agent token rules in your website's robots.txt. Set up Dark Visitors agent analytics to check whether it's actually following them.

User Agent Token	Description
`W3C_CSS_Validator`	Should match instances of W3C_CSS_Validator

# robots.txt
# This should block W3C_CSS_Validator

User-agent: W3C_CSS_Validator
Disallow: /