About the User-Agent String
The User-Agent (or UA) string is sent along in the headers of every HTTP request so the server knows what type of browser is making the request. For a quick refresher on the User-Agent string, check out George Shephard's article in MSDN Magazine. Two MSDN articles describe User-Agent headers: Understanding User-Agent Strings, and Best Practices for detecting the Internet Explorer version.
Want Internet Explorer to simulate another version?
Run one of the following scripts and restart all browser instances to see the change:
This addon does not work in IE8 Beta or Win7 Beta, but does work in Release Candidate and
final builds.
Cache-Control: no-cache
Connection: close
Pragma: no-cache
Accept: Accept: application/xhtml+xml,text/html;q=0.9,text/plain;
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Accept-Encoding: gzip
Accept-Language: en-us,en;q=0.5
Host: www.fiddlertool.com
User-Agent: CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
x-cc-list: List:1 For:208.106.197.234
Type = Unknown Name = Unknown Version = 0.0 Major Version = 0 Minor Version = 0 Platform = Unknown Is Beta = False Is Crawler = False Is AOL = False Is Win16 = False Is Win32 = False Supports Frames = False Supports Tables = False Supports Cookies = True Supports VBScript = False Supports JavaScript = False Supports Java Applets = False Supports ActiveX Controls = False
Document mode clientCaps Info