150 whatweb(1) - Kailash Tool Reference
150.1 whatweb
whatweb - Next-generation web scanner — technology fingerprinting.
| Layer | CLASSIC |
| Category | c-01-information-gathering |
| Safety class | safe |
| Licence | GPL-2.0-only |
| Upstream | github.com/urbanadventurer/whatweb |
150.1.1 NAME
whatweb - Next-generation web scanner — technology fingerprinting.
150.1.2 SYNOPSIS & usage
Derived from the upstream README at generation time; verify against --help where the tool is installed.
$ ./whatweb reddit.com
http://reddit.com [301 Moved Permanently] Country[UNITED STATES][US], HTTPServer[snooserv], IP[151.101.65.140], RedirectLocation[https://www.reddit.com/], UncommonHeaders[retry-after,x-served-by,x-cache-hits,x-timer], Via-Proxy[1.1 varnish]
https://www.reddit.com/ [200 OK] Cookies[edgebucket,eu_cookie_v2,loid,rabt,rseor3,session_tracker,token], Country[UNITED STATES][US], Email[banner@2x.png,snoo-home@2x.png], Frame, HTML5, HTTPServer[snooserv], HttpOnly[token], IP[151.101.37.140], Open-Graph-Protocol[website], Script[text/javascript], Strict-Transport-Security[max-age=15552000; includeSubDomains; preload], Title[reddit: the front page of the internet], UncommonHeaders[fastly-restarts,x-served-by,x-cache-hits,x-timer], Via-Proxy[1.1 varnish], X-Frame-Options[SAMEORIGIN]# Force real-time output to screen and logs (slower but immediate)
./whatweb --output-sync -t 100 --log-brief=results.txt targets.txt
# Custom buffer size for high-volume logging
./whatweb --output-buffer-size=50 -t 100 --log-verbose=detailed.log targets.txt
# Disable buffering entirely for immediate file writes
./whatweb --output-buffer-size=0 -t 10 --log-json=results.json targets.txt150.1.3 DESCRIPTION (upstream)
Developed by Andrew Horton urbanadventurer and Brendan Coles bcoles Latest Release: v0.6.4. April 3, 2026 License: GPLv2 This product is subject to the terms detailed in the license agreement. For more information about WhatWeb visit https://github.com/urbanadventurer/ Wiki: https://github.com/urbanadventurer/WhatWeb/wiki/ If you have any questions, comments or concerns regarding WhatWeb, please consult the documentation prior to contacting one of the developers. Your feedback is always welcome. * About WhatWeb * Example Usage * Usage * Logging & Output * Plugins * Aggression * Performance & Stability * Optional Dependencie
150.1.4 OPTIONS (upstream README)
| Flag | Meaning |
|---|---|
--cookie |
, -c=COOKIES- Set initial cookies manually | |–cookie| jar=FILE - Load cookies from file |
--no-cookies |
Disable automatic cookie handling |
150.1.5 SEE ALSO
- Category: c-01-information-gathering in the category directory (sister tools listed there).
ref: pin - verified 2026-10-14