HC
Headless Chrome
Headless Chrome browser automation
About this crawler
Headless Chrome is a web crawler identified by the regular-expression pattern Headless Chrome in the User-Agent request header. It is categorised as browser-automation. Use the regex above to detect, log, allow, or block Headless Chrome traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- Headless Chrome
- Pattern
Headless Chrome- Tags
- browser-automation
- Added
- 2026/05/09
- Instances
- 1 known sample(s)
Sample User-Agent strings
Headless Chrome 131.0.6778.87 on GNU/Linux
Block this crawler
robots.txt — disallow Headless Chrome:
User-agent: Headless Chrome
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Headless Chrome [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Headless Chrome") {
return 403;
}
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