Icourses.cn Site Title

爱课程

Icourses.cn Meta Description

“爱课程”网是教育部、财政部 “十二五”期间启动实施的“高等学校本科教学质量与教学改革工程”支持建设的高等教育课程资源共享平台。本网站集中展示“中国大学视频公开课”和“中国大学资源共享课”,并对课程资源进行运行、更新、维护和管理。网站提供优质教育资源共享和个性化教学资源服务,网站致力于推动优质课程资源的广泛传播和共享,深化本科教育教学改革,提高高等教育质量,推动高等教育开放,并从一定程度上满足人民群众日趋强烈的学习需求、促进学习型社会建设。

Icourses.cn Test Results

icourses.cn Mobile Usability: 67/100

Quick overview:
Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
收藏本站 and 4 others render only 5 pixels tall (12 CSS pixels) .
...
Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
Configure a viewport for this page.
Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target <a href="javascript:void(0)">收藏本站</a> and 2 others are close to other tap targets .
...

icourses.cn Mobile Speed: 31/100

Quick overview:
Optimize images
Properly formatting and compressing images can save many bytes of data.
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Compressing and resizing http://dynamic3.icourses.cn/video/vcourseimg/videoPic/201505/1b90cef57bc4f274f29a538d0f49701d.png could save 272.7KiB (91% 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:
http://dynamic1.icourses.cn//userpic/2012/1116/ff8080813af4439c013af764f7f0026a_180.jpg (expiration not specified)
...
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 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.
http://static1.icourses.cn/sns/js/common/jquery.min.js
...
Optimize CSS Delivery of the following:
http://static1.icourses.cn/cms/common/lhgdialog4/skins/idialog.css
...
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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 143.8KiB (69% reduction).
Compressing http://static1.icourses.cn/sns/js/common/jquery.min.js could save 59.7KiB (64% reduction).
...
Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://icourses.cn/
...
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 18.8KiB (41% reduction).
Minifying http://static1.icourses.cn/cms/common/lhgdialog4/lhgdialog.min.js?skin=idialog could save 18KiB (42% reduction).
...
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 4.7KiB (16% reduction).
Minifying http://static1.icourses.cn/cms/jpk/css/v_base.css could save 3.3KiB (16% reduction).
...
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 3.6KiB (16% reduction).
Minifying http://www.icourses.cn/home/ could save 2.8KiB (15% reduction) after compression.
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