WhatWeb(1) Web scanner to identify what websites are running.


whatweb [options] <URLs>


WhatWeb identifies websites. It's goal is to answer the question, "What is that Website?". WhatWeb recognises web technologies including content management systems (CMS), blogging platforms, statistic/analytics packages, JavaScript libraries, web servers, and embedded devices. WhatWeb has over 900 plugins, each to recognise something different. WhatWeb also identifies version numbers, email addresses, account ID's, web framework modules, SQL errors, and more.

WhatWeb can be stealthy and fast, or thorough but slow. WhatWeb supports an aggression level to control the trade off between speed and reliability. When you visit a website in your browser, the transaction includes many hints of what web technologies are powering that website. Sometimes a single webpage visit contains enough information to identify a website but when it does not, WhatWeb can interrogate the website further. The default level of aggression, called 'passive', is the fastest and requires only one HTTP request of a website. This is suitable for scanning public websites. More aggressive modes were developed for in penetration tests.

Most WhatWeb plugins are thorough and recognise a range of cues from subtle to obvious. For example, most WordPress websites can be identified by the meta HTML tag, e.g. '<meta name="generator" content="WordPress 2.6.5">', but a minority of WordPress websites remove this identifying tag but this does not thwart WhatWeb. The WordPress WhatWeb plugin has over 15 tests, which include checking the favicon, default installation files, login pages, and checking for "/wp-content/" within relative links.

       * Over 1000 plugins
       * Control the trade off between speed/stealth and reliability
       * Performance tuning. Control how many websites to scan concurrently.
       * Multiple log formats: Brief (greppable), Verbose (human readable), XML, JSON, MagicTree, RubyObject, MongoDB, SQL.
       * Proxy support including TOR
       * Custom HTTP headers
       * Basic HTTP authentication
       * Control over webpage redirection
       * Nmap-style IP ranges
       * Fuzzy matching
       * Result certainty awareness
       * Custom plugins defined on the command line


Enter URLs, filenames or nmap-format IP ranges. Use /dev/stdin to pipe HTML directly
--input-file=FILE -i
Identify URLs found in FILE
--aggression -a
1 (Stealthy) - Makes one HTTP request per target. Also follows redirects.

2 (Unused) -

3 (Aggressive) - Can make a handful of HTTP requests per target. This triggers aggressive plugins for targets only when those plugins are identified with a level 1 request first.

4 (Heavy) - Makes a lot of HTTP requests per target. Aggressive tests from
 all plugins are used for all URLs.

--list-plugins -l
List the plugins
--plugins -p
Comma delimited set of selected plugins. Default is all.
 Each element can be a directory, file or plugin name and
 can optionally have a modifier, eg. + or -
 Examples: +/tmp/moo.rb,+/tmp/foo.rb
--info-plugins -I
Display information for all plugins. Optionally search
 with keywords in a comma delimited list.
--grep -g
Search for a string. Reports in a plugin called Grep
--colour=[WHEN] --color=[WHEN]
control whether colour is used. WHEN may be "never", "always", or "auto"
Log verbose output
--quiet, -q
Do not display brief logging to STDOUT
Log brief, one-line output
Log XML format
Log JSON format
Log SQL INSERT statements
Create SQL database tables
Log JSON Verbose format
Log MagicTree XML format
Log Ruby object inspection format
Name of the MongoDB database
Name of the MongoDB collection. Default: whatweb
MongoDB hostname or IP address. Default:
MongoDB username. Default: nil
MongoDB password. Default: nil
Log errors
Suppress error messages
--user-agent -U
Identify as user-agent instead of WhatWeb/VERSION.
--user -u <user:password>
HTTP basic authentication
--header -H
Add an HTTP header. eg "Foo:Bar". Specifying a default
 header will replace it. Specifying an empty value, eg.
 "User-Agent:" will remove the header.
--max-threads -t
Number of simultaneous threads. Default is 25.
Control when to follow redirects. WHEN may be "never", "http-only", "meta-only", "same-site", "same-domain" or "always"
Maximum number of contiguous redirects. Default: 10
--proxy <hostname[:port]>
Set proxy hostname and port (default: 8080)
--proxy-user <username:password>
Set proxy user and password
Time in seconds. Default: 15
Time in seconds. Default: 30
Wait SECONDS between connections. This is useful when using a single thread.
Define a custom plugin call Custom, Examples: ":text=>'powered by abc'" ":regexp=>/powered[ ]?by ab[0-9]/" ":ghdb=>'intitle:abc "powered by abc"'" ":md5=>'8666257030b94d3bdb46e05945f60b42'" "{:text=>'powered by abc'},{:regexp=>/abc [ ]?1/i}"
--dorks <plugin name>
List google dorks for the selected plugin
Add a prefix to target URLs
Add a suffix to target URLs
Insert the targets into a URL. Requires --input-file, eg. www.example.com/%insert%/robots.txt
--help -h
Display usage
--verbose -v
Increase verbosity (recommended), use twice for debugging.
Raise errors in plugins.
Display version information.



 whatweb example.com
Passive (Verbose):

 whatweb -v example.com

 whatweb -a 3 example.com
IP Ranges



Report bugs and feature requests to https://github.com/urbanadventurer/WhatWeb


WhatWeb was written by Andrew Horton aka urbanadventurer, and Brendan Coles.