Your page has no redirects. Learn more about avoiding landing page redirects.
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by https://developers.google.com/speed/docs/insights/EnableCompression (419B reduction).
Compressing https://api.58.com/frontapi/version?frontfile=j1.58cdn.com.cn%2FcomponentsLoader%2Fdist%2FPopupLogin.js%7Cj1.58cdn.com.cn%2FcomponentsLoader%2Fdist%2FPopupBind.js%7Cj1.58cdn.com.cn%2Fgit%2Fpassport-popupwarn%2FBindBefore.js%7Cj1.58cdn.com.cn%2FcomponentsLoader%2Fdist%2FPopCollection.js%7Cj1.58cdn.com.cn%2Fgit%2Fpassport-popupwarn%2FMobileSure.js%7Cj1.58cdn.com.cn%2Fgit%2Fpassport-popupwarn%2FWarn.js%7Cj1.58cdn.com.cn%2Fgit%2Fprivate-phone-call-pc%2Fdist%2Fjs%2Fbundle_pc_generate.js%7C&assign=function%20(target)%7Bif(target%3D%3Dnull)%7Bthrow%20new%20TypeError(%22Cannot%20convert%20undefined%20or%20null%20to%20object%22)%7Dvar%20to%3DObject(target)%3Bfor(var%20index%3D1%3Bindex%3Carguments.length%3Bindex%2B%2B)%7Bvar%20nextSource%3Darguments%5Bindex%5D%3Bif(nextSource!%3Dnull)%7Bfor(var%20nextKey%20in%20nextSource)%7Bif(Object.prototype.hasOwnProperty.call(nextSource%2CnextKey))%7Bto%5BnextKey%5D%3DnextSource%5BnextKey%5D%7D%7D%7D%7Dreturn%20to%7D&callback=JSONP_1561514917225 could save 419B (60% reduction).
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://j1.58cdn.com.cn/crop/zcm/lib/js/scrollMath.main_v20190411112250.js (10 minutes)
Your server responded quickly. Learn more about server response time optimization.
Your CSS is minified. Learn more about minifying CSS.
Your HTML is minified. Learn more about minifying HTML.
Your page has 1 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Optimize CSS Delivery of the following:
Your images are optimized. Learn more about optimizing images.
You have the above-the-fold content properly prioritized. Learn more about prioritizing visible content.