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Do site often use some online gadgets, check PR, check the situation, search rankings and so on are necessary, at present we are familiar with the webmaster sites have to provide such online tools, but have their own characteristics, here I summarize their often used webmaster tools, by the way, their respective characteristics, friends can refer to:
http://www.linkhelper.cn/
Features: Batch Check the site links good tools, easy to check all the links outside the chain, included, snapshot date, PR value, in addition to the bulk of the site to check the link in the server IP.
http://tool.chinaz.com/
Features: very fast and convenient check site links, keyword density and so on, in addition to the online production site logo function.
http://tool.admin5.com/
Features: keyword Heat bulk query function, easy to compare multiple keywords Baidu index, conducive to optimization.
http://tool.cnzz.cn/
Features: Query function can query Baidu "Yesterday, nearly a week, nearly January, nearly a year" respectively included in the number of pages of the site, in addition to the Server Web site query function can easily detect the same IP on what sites.
http://www.zzsky.cn/tool/
Features: The tools provided are relatively more comprehensive, and many tools are practical.
http://tool.alimama.com/
Features: This is Ali mother webmaster tools, which web page keyword density query function can automatically calculate the density of all the keywords on the page.
http://tools.now.cn/
Features: illegal information self-examination function is relatively fast and convenient, FTP, database online detection also do a good job.