Best online web sniffer !


Let's sniff your first URL !

Url to sniff :

Choose your user agent :

Why using Web-sniffer.me ?

Display easily the HTTP request header, the HTTP response header, the HTML source code of any web page. Get redirect hit, simulate more thant 20 user agents, get security information and basic crawl data.


  • Visualise HTTP request and response message.
  • Choose user agent in more than 10 different agents.
  • Analyse http and https websites.
  • View html headers online.

Page analysis

  • Get a clear, highlighted and easy to read html source code of the website.
  • HTTP Monitor of any website.
  • Get download speed of your website.

Domain analysis

  • Localized server IP
  • Get ISP (Internet Service Provider)
  • Find organisation associated to domain name

It's free

Web-sniffer.me is free and unlimited. You can use it whenever you need it.