各大搜索引擎 User-Agent

百度PC User-Agent

Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)

Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)

百度图片  User-Agent

Baiduspider-image+(+http://www.baidu.com/search/spider.htm)

谷歌 PC  User-Agent

Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)

谷歌图片   User-Agent

Mozilla/5.0 (compatible; Googlebot-Image/1.0; +http://www.google.com/bot.html)

搜狗 PC   User-Agent

Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)

搜狗图片  User-Agent

Sogou Pic Spider/3.0(+http://www.sogou.com/docs/help/webmasters.htm#07)

360搜索   User-Agent

Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0);