WhatWeb

Identify web technologies behind a site.

KaliParrotlow

pkg: whatweb

WhatWeb fingerprints CMS, frameworks, servers, analytics and libraries from HTTP responses and page content.

Syntax

whatweb [-a level] {url}

Example

whatweb -a 3 https://example.com

Aggressively (-a 3) fingerprints technologies, versions and plugins on the site.

Options & flags

What each switch does. Toggle them in the builder below to assemble a command.

-a <3>Aggression level 1-4 (3 = aggressive).
--log-json <out.json>Write JSON output.
-U <Mozilla/5.0>Custom User-Agent.
-vVerbose plugin detail.

Command builder

Tick options (and fill any values) to build a ready-to-copy command.

whatweb

Usage examples

whatweb https://target.tld

Passive technology fingerprint.

whatweb -a 3 https://target.tld

Aggressive version detection.

Advantages
  • Fast tech/version fingerprinting
  • Adjustable aggression levels
  • Plugin-extensible
Disadvantages
  • Aggressive mode sends extra requests
  • Heuristics can misidentify
  • Version detection not guaranteed
Tags
#web#fingerprint

Official docs: WhatWeb ↗

Related commands

Frequently asked questions

What is WhatWeb used for?
WhatWeb fingerprints CMS, frameworks, servers, analytics and libraries from HTTP responses and page content.
What is an example WhatWeb command?
A common example is: whatweb -a 3 https://example.com — Aggressively (-a 3) fingerprints technologies, versions and plugins on the site.
Is WhatWeb part of Kali Linux?
Yes. WhatWeb ships with Kali Linux (and Parrot OS). If missing, install it with: sudo apt install whatweb.
What category of security tool is WhatWeb?
WhatWeb is a Information Gathering tool with a low-risk profile when run against a live target.

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