21shipin.com Site Title

21视频教程网|c语言视频教程|flash小游戏视频教程|photoshop视频教程--专业的网站开发视频教程学习网站

21shipin.com Meta Description

本站主要提供视频教程内容包括:Windows,office2007视频教程,网页三剑客视频教程,Photoshop cs视频教程,CorelDrawd12,C语言视频教程,C语言入门,JavaScript,Asp+access,vs2005+sql2005+xml+ajax,FlashAS视频教程,等一系列视频教程.让学员从菜鸟变成网站制作的高手

21shipin.com Test Results

21shipin.com Mobile Usability: 56/100

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.
[加入收藏] and 3 others render only 5 pixels tall (12 CSS pixels).
...
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:win…,%20&#39;21视频教程网&#39;)">[加入收藏]</a> and 3 others are close to other tap targets.
...
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.
Size content to viewport
The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.
The page content is 1,221 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:
The element <img src="http://www.21s…/qq/qq_top.gif"> falls outside the viewport.
...

21shipin.com Mobile Speed: 65/100

Quick overview:
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://21shipin.com/Scripts/AC_RunActiveContent.js
Optimize CSS Delivery of the following:
http://21shipin.com/21css.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://21shipin.com/21css.css (expiration not specified)
...
Enable compression
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 106.6KiB (80% reduction).
Compressing http://21shipin.com/ could save 78.2KiB (81% reduction).
...
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.
96.4KiB of the HTML response was required to render the above-the-fold content. This requires 3 network round-trips. However, if the HTML response were compressed, then the HTML required to render the above-the-fold content could be delivered in just 2 network round-trips. Enable compression for the HTML response in order to prioritize the visible content for this page.
Only about 61% of the final above-the-fold content could be rendered with the HTML delivered within 2 round-trips.
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 24.5KiB (59% reduction).
Compressing http://21shipin.com/pic/images/logo.jpg could save 23.1KiB (63% 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 19.4KiB (21% reduction).
Minifying http://21shipin.com/ could save 19.4KiB (21% 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 4.8KiB (19% reduction).
Minifying http://21shipin.com/21css.css could save 4.8KiB (19% reduction).
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 3.1KiB (39% reduction).
Minifying http://21shipin.com/Scripts/AC_RunActiveContent.js could save 3.1KiB (39% reduction).

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