facebookexternalhit User-Agent & Blocking Rules
Operated by Meta
Safe
What is facebookexternalhit?
This is the primary crawler for Facebook. It fetches content to generate previews (title, description, image) when a link is shared on Facebook.
Test if facebookexternalhit can access your URL
Enter URL to test if facebookexternalhit is allowed or blocked.
Is facebookexternalhit Safe?
Yes, facebookexternalhit is considered safe.
This bot is verified and generally respected by the SEO community.
For more information about our safety badges, visit our documentation.
User-Agent String used by facebookexternalhit
facebookexternalhitHow to Block facebookexternalhit?
Add the following standard robots.txt rule to prevent facebookexternalhit from accessing your site.
User-agent: facebookexternalhit Disallow: /