51cto.com Site Title

技术成就梦想51CTO-中国知名的数字化人才学习平台和技术社区

51cto.com Meta Description

51CTO是中国知名的数字化人才学习平台和技术社区，以服务一亿数字化人才职业成长为己任，对中国数千万数字化人才拥有强大的影响力和服务能力。通过技术社区、技术博客和新媒体矩阵等综合产品服务体系，凝聚了2000万+IT技术人员、50万+位技术博主和近千家IT公司的CTO；通过丰富且高质量的IT技术在线教育资源，完整覆盖就业培训、在职提升、认证考试等职业教育领域，分别打造企业培训、个人提升创新产品矩阵，服务IT人才成长。同时，作为华为鸿蒙操作系统合作伙伴，51CTO承担了鸿蒙官方技术社区的运营，全力服务于鸿蒙开发者生态。

51cto.com Test Results

51cto.com Mobile Usability: 89/100

Quick overview:
Configure the viewport
Your page specifies a fixed-width desktop viewport. Use a responsive viewport to allow your page to render properly on all devices.
Configuring a viewport specifying width=device-width instead of width=640 will allow your page to adapt for devices of various widths. This may require additional work to adapt your styling for smaller screens.

51cto.com Mobile Speed: 53/100

Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 2 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.
Remove render-blocking JavaScript:
https://static5.51cto.com/51cto/cms/wap/channel/js/zepto.min.js
...
Optimize CSS Delivery of the following:
https://static4.51cto.com/51cto/cms/wap/home/css/public.css
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 330.9KiB (72% reduction).
Compressing https://s4.51cto.com/oss/201911/26/103ea41d96aa4f7851147411776e285a.jpg could save 72.6KiB (76% reduction).
...
Leverage browser caching
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://static1.51cto.com/51cto/cms/wap/channel/images/dian.png (expiration not specified)
...
Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1.5KiB (26% reduction).
Minifying https://static3.51cto.com/51cto/cms/wap/channel/js/touch.js could save 816B (42% reduction) after compression.
...
Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 423B (13% reduction).
Minifying https://static4.51cto.com/51cto/cms/wap/home/css/public.css could save 423B (13% reduction) after compression.

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