How to block Crazy Egg
Operated by CrazyEgg. Crazy Egg is a web analytics bot that takes screenshots of pages, collects assets, and tests script installation to help optimize website user experience.
nginx
In the server block, then reload.
nginx
# In the server block. 403 rather than 444: a closed connection tells the
# operator nothing, and an agent that gets a status code can log it.
if ($http_user_agent ~* "(Crazy Egg)") {
return 403;
}
Apache
In .htaccess or the vhost.
Apache
BrowserMatchNoCase "Crazy Egg" bad_bot
<RequireAll>
Require all granted
Require not env bad_bot
</RequireAll>
Cloudflare
Security → WAF → Custom rules.
Cloudflare
# Security → WAF → Custom rules, action: Block (http.user_agent contains "Crazy Egg")
WordPress
A child theme's functions.php, or a small plugin.
WordPress
// functions.php of a child theme, or a small plugin. Runs before WordPress
// builds the page, so a blocked agent costs one PHP process and no queries.
add_action('init', function () {
$agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
foreach (['Crazy Egg'] as $needle) {
if (stripos($agent, $needle) !== false) {
status_header(403);
exit('Blocked: Crazy Egg');
}
}
});
A rule on the user agent is a rule on a string it chose
The server rules match on a header the requester sets, which stops the agent that says who it is and not the one that copies somebody else's name. Botscope verifies identity against DNS and published address ranges, records which check decided each request, and shows you the ones that lied.