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HTTrack

http-library HTTrack

HTTrack website copier for offline browsing

About this crawler

HTTrack is a web crawler identified by the regular-expression pattern HTTrack in the User-Agent request header. It is categorised as http-library. Use the regex above to detect, log, allow, or block HTTrack traffic in your web server, CDN edge rules, or robots.txt.

Block-rate · top 25k sites

1.8%
latest snapshot
2026-06-04
matched key: HTTrack
2026-05-012026-06-042.4%

Technical details

Name
HTTrack
Pattern
HTTrack
Tags
http-library
Instances
1 known sample(s)

Sample User-Agent strings

Mozilla/4.5 (compatible; HTTrack 3.0x; Windows 98)

Block this crawler

robots.txt — disallow HTTrack:

User-agent: HTTrack Disallow: /

Apache .htaccess — return 403:

RewriteEngine On RewriteCond %{HTTP_USER_AGENT} HTTrack [NC] RewriteRule .* - [F,L]

Nginx — return 403 inside a server block:

if ($http_user_agent ~* "HTTrack") { return 403; }
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