21cnjy.com Site Title

21世纪教育网(二一教育)-试题,课件,教案,学案、高中考资源下载

21cnjy.com Meta Description

国内排名前列的中小学教育资源网,提供全国中小学各版本教材的课件教案学案备课素材试卷练习等资源下载。资源多、时效强、质量高,是中小学老师学生们的最佳选择

21cnjy.com Test Results

21cnjy.com Mobile Usability: 100/100


21cnjy.com Mobile Speed: 41/100

Quick overview:
Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://21cnjy.com/
...
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 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.
https://m.21cnjy.com/lib/underscore-min.js
...
Optimize CSS Delivery of the following:
https://m.21cnjy.com/css/home.min.css?v=f8295f6cc5
...
Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 190.2KiB (40% reduction).
Compressing https://imgs.21cnjy.com/common/cf/134628ezlkllglg3kh3l3a.jpg could save 138.3KiB (78% 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://imgs.21cnjy.com/book/2019/08/Cg-Ki02z7uA8gMbsEVzZHP21_jitNOIS.png (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 62KiB (65% reduction).
Compressing https://static.21cnjy.com/js/jquery-1.12.0.min.js could save 62KiB (65% reduction).
Reduce server response time
In our test, your server responded in 0.47 seconds.
There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
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 774B (16% reduction).
Minifying https://m.21cnjy.com/ could save 774B (16% reduction) after compression.

Similar tests
www.21cnjy.com
www.21cnjy.net
www.21cnjy.org
www.21cnjy.info
www.21cnjy.biz
www.21cnjy.us
www.21cnjy.mobi
www.1cnjy.com
www.21cnjy.com
www.2cnjy.com
www.21njy.com
www.21xnjy.com
www.21cxnjy.com
www.21xcnjy.com
www.21dnjy.com
www.21cdnjy.com
www.21dcnjy.com
www.21fnjy.com
www.21cfnjy.com
www.21fcnjy.com
www.21vnjy.com
www.21cvnjy.com
www.21vcnjy.com
www.21cjy.com
www.21cbjy.com
www.21cnbjy.com
www.21cbnjy.com
www.21chjy.com
www.21cnhjy.com
www.21chnjy.com
www.21cjjy.com
www.21cnjjy.com
www.21cjnjy.com
www.21cmjy.com
www.21cnmjy.com
www.21cmnjy.com
www.21cny.com
www.21cnny.com
www.21cnjny.com
www.21cnnjy.com
www.21cnhy.com
www.21cnjhy.com
www.21cnuy.com
www.21cnjuy.com
www.21cnujy.com
www.21cniy.com
www.21cnjiy.com
www.21cnijy.com
www.21cnky.com
www.21cnjky.com
www.21cnkjy.com
www.21cnmy.com
www.21cnjmy.com
www.21cnj.com
www.21cnjt.com
www.21cnjyt.com
www.21cnjty.com
www.21cnjg.com
www.21cnjyg.com
www.21cnjgy.com
www.21cnjh.com
www.21cnjyh.com
www.21cnju.com
www.21cnjyu.com
www.21cnjy.con
Last Tested: