测速工具
1.PageSpeed Insights
https://developers.google.com/speed/pagespeed/insights/
2.Pingdom
https://tools.pingdom.com/#5d4abe0c0cc00000
3.webpagetest
https://performance.sucuri.net/domain/
4.GTmetrix
https://gtmetrix.com/reports/
5.uptrends
https://www.uptrends.com/tools/website-speed-test
域名响应时间
https://performance.sucuri.net/domain/
webpagetest
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