Critical CSS Bot
What is Critical CSS Bot?
About
Critical CSS Bot is an uncategorized agent operated by Critical CSS. 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. You can see how often Critical CSS Bot visits your website by setting up Dark Visitors agent analytics.
Detail
| Operator | Critical CSS |
Type
Expected Behavior
Behavior will vary depending on whether this agent is a search engine crawler, data scraper, archiver, one-off fetcher, etc.
Agent 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.
Top Websites
Robots.txt
Should I Block Critical CSS Bot?
It's difficult to say without a type. Its purposes could either be good or bad for your website, depending on what it is.
How Do I Block Critical CSS Bot?
You can block Critical CSS Bot 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 |
|---|---|
Critical CSS Bot |
Should match instances of Critical CSS Bot |
# robots.txt
# This should block Critical CSS Bot
User-agent: Critical CSS Bot
Disallow: /
Recommended Solution
Instead of doing this manually, use automatic robots.txt to keep your rules updated with the latest AI scrapers, crawlers, and assistants automatically.
Global Bot & LLM Traffic
Uncategorized Agents
The overall volume of internet traffic coming from Uncategorized Agents
See Global Bot & LLM Traffic →