Facebot
Facebook's web crawler for social sharing
About this crawler
Facebot is a web crawler identified by the regular-expression pattern Facebot in the User-Agent request header. It is categorised as social-preview. Use the regex above to detect, log, allow, or block Facebot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.20%
Technical details
- Name
- Facebot
- Pattern
Facebot- Tags
- social-preview
- Reference
- https://developers.facebook.com/docs/sharing/best-practices#crawl
- Added
- 2014/12/30
- Instances
- 1 known sample(s)
Sample User-Agent strings
Facebot/1.0
Block this crawler
robots.txt — disallow Facebot:
User-agent: Facebot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Facebot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Facebot") {
return 403;
}
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