diffbot
Diffbot structured data extraction bot
About this crawler
diffbot is a web crawler identified by the regular-expression pattern diffbot in the User-Agent request header. It is categorised as ai-fetcher. Use the regex above to detect, log, allow, or block diffbot traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.13%
Technical details
- Name
- diffbot
- Pattern
diffbot- Tags
- ai-fetcher
- Reference
- http://www.diffbot.com
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.15 (KHTML like Gecko; +http://www.diffbot.com) Chrome/24.0.1295.0 Safari/537.15
Block this crawler
robots.txt — disallow diffbot:
User-agent: diffbot
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} diffbot [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "diffbot") {
return 403;
}
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