HTTP User Agent in Internet Browsers

See how your computer and browser identifies itself to websites through the user agent string.

User Agent ID and User Agent String Information

Knowing the UserAgent ID strings used by crawlers and browser can be useful for various purposes. Browsers and search engine crawlers usually identify themselves through a HTTP user agent ID string field.

Some websites use the user agent string ID to detect if the visitor is a specific browser or search engine crawler. The http user agent id string field allows websites to check and detect browser and versions; this information can be used to output different html and content.

You can also use the underneath HTTP user agent strings in our desktop crawler and sitemapper software tools to test how your own website behaves when exposed to different browsers and robots.

Your Current Browser User Agent ID

See your HTTP user agent ID
Your browser user agent ID:CCBot/2.0 (https://commoncrawl.org/faq/)

Common User Agent Strings and IDs

User agent stringsUser agent information
Mozilla/5.0 (Windows; U; Windows NT 5.1; en) AppleWebKit/522.11.3 (KHTML, like Gecko) Version/3.0 Safari/522.11.3Safari 3 Beta on Windows XP SP2
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)
Mozilla/5.0 (Windows; U; Windows NT 5.1; nl; rv:1.8) Gecko/20051107 Firefox/1.5
Opera/9.0 (Windows NT 5.0; U; en)
Lynx/2.8.4rel.1 libwww-FM/2.14
Mozilla/2.0 (compatible; Ask Jeeves/Teoma)
Mozilla/3.0 (Slurp/si; slurp@inktomi.com; http://www.inktomi.com/slurp.html)
Mozilla/5.0 (compatible; Yahoo! Slurp;http://help.yahoo.com/help/us/ysearch/slurp)
Mozilla/5.0 (compatible; googlebot/2.1; +http://www.google.com/bot.html)
Googlebot/2.1 (+http://www.google.com/bot.html)
msnbot/1.0 (+http://search.msn.com/msnbot.htm)
Baiduspider ( http://www.baidu.com/search/spider.htm)
Mozilla/4.0 (compatible; GoogleToolbar 4.0.1306.3130-big; Windows XP 5.1; MSIE 7.0.5730.11)
Mozilla/4.0 (compatible; GoogleToolbar 4.0.1306.3130-big; Windows XP 5.1; MSIE 6.0.2900.2180)
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