Dead Link Checker
Broken link detection and website maintenance bot
About this crawler
Dead Link Checker is a web crawler identified by the regular-expression pattern Dead Link Checker in the User-Agent request header. It is categorised as seo. Use the regex above to detect, log, allow, or block Dead Link Checker traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- Dead Link Checker
- Pattern
Dead Link Checker- Tags
- seo
- Reference
- http://www.dead-link-checker.com/
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (compatible; Dead Link Checker; http://www.dead-link-checker.com/)
Block this crawler
robots.txt — disallow Dead Link Checker:
User-agent: Dead Link Checker
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Dead Link Checker [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Dead Link Checker") {
return 403;
}
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