Xuetangx.com Site Title

学堂在线-最大的中文慕课(MOOC)平台

Xuetangx.com Meta Description

学堂在线是免费公开的MOOC(大规模开放在线课程)平台,是国家教育部MOOC研究中心官方合作平台,致力于通过来自国内外一流名校开设的免费网络学习课程,为公众提供系统的高等教育,让每一个中国人都有机会享受优质教育资源。通过和清华大学在线教育研究中心、以及国内外知名大学的紧密合作,学堂在线将不断增加课程的种类和丰富程度。

Xuetangx.com Test Results

Xuetangx.com Mobile Usability: 100/100

Xuetangx.com Mobile Speed: 62/100

Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 1 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://www.xuetangx.com/static/js/lib/require.2d213b58c463.js
...
Optimize CSS Delivery of the following:
http://www.xuetangx.com/static/xuetangx/mobileindex.85f09e86dde3.css
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:
http://storage.xuetangx.com/public_assets/xuetangx/banner/20150911172814719836 (expiration not specified)
...
Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 51% of the final above-the-fold content could be rendered with the full HTML response.
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 36.4KiB (50% reduction).
Minifying http://www.xuetangx.com/static/js/appSrc/analyticshost.20a224755bf9.js could save 36.4KiB (50% reduction) after compression.
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 15.2KiB (22% reduction).
Losslessly compressing http://storage.xuetangx.com/public_assets/xuetangx/bbs/cover/yijuhua.png could save 14.2KiB (20% reduction).
...

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