6.1 sec in total
935 ms
3.7 sec
1.4 sec
Visit jiuzhang.com now to see the best up-to-date Jiuzhang content for United States and also check out these interesting facts you probably never knew about jiuzhang.com
九章算法致力于让顶尖的工程师在线传授最优质的计算机课程,帮助更多程序员找到好工作
Visit jiuzhang.comWe analyzed Jiuzhang.com page load time and found that the first response time was 935 ms and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
jiuzhang.com performance score
name
value
score
weighting
Value12.4 s
0/100
10%
Value22.3 s
0/100
25%
Value15.9 s
0/100
10%
Value1,550 ms
13/100
30%
Value0.593
11/100
15%
Value21.4 s
1/100
10%
935 ms
494 ms
11 ms
15 ms
36 ms
Our browser made a total of 97 requests to load all elements on the main page. We found that 89% of them (86 requests) were addressed to the original Jiuzhang.com, 4% (4 requests) were made to F.vimeocdn.com and 2% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Meiqia.com.
Page size can be reduced by 2.0 MB (33%)
6.2 MB
4.2 MB
In fact, the total size of Jiuzhang.com main page is 6.2 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 4.6 MB which makes up the majority of the site volume.
Potential reduce by 62.6 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 14.2 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 62.6 kB or 79% of the original size.
Potential reduce by 768.6 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Jiuzhang needs image optimization as it can save up to 768.6 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 496.8 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 496.8 kB or 70% of the original size.
Potential reduce by 689.3 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Jiuzhang.com needs all CSS files to be minified and compressed as it can save up to 689.3 kB or 89% of the original size.
Number of requests can be reduced by 44 (47%)
93
49
The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jiuzhang. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.
jiuzhang.com
935 ms
www.jiuzhang.com
494 ms
font-awesome.min.css
11 ms
pi.settings.css
15 ms
colorbox.css
36 ms
fontello.css
35 ms
global.css
17 ms
typo.css
32 ms
portfolio.css
30 ms
slider.css
35 ms
counters.css
35 ms
social.css
45 ms
tables.css
38 ms
tooltips.css
35 ms
accordion.css
40 ms
tabs.css
34 ms
jquery.datetimepicker.css
37 ms
testimonials.css
37 ms
animations.css
39 ms
boxes.css
46 ms
hint.min.css
44 ms
146201839
77 ms
boat.jpg
23 ms
logo-base.png
27 ms
suanfa-S-01-450.jpg
16 ms
system-S-01-450.jpg
14 ms
gaosuan_1.png
57 ms
java5.png
17 ms
modern-skyscraper.jpg
63 ms
light-bulb-lined-white.png
17 ms
monitor-lined-white.png
18 ms
pencil-brush-lined-white.png
20 ms
compass-lined-white.png
19 ms
hexagon.png
21 ms
yangguo.jpg
25 ms
fenglaoshi.png
28 ms
teacher_1.jpeg
24 ms
guojing2.png
27 ms
leader-88.png
46 ms
BI_engineer.png
35 ms
touhang_1.png
34 ms
jinrong_IT_1.png
34 ms
offer.png
45 ms
interview5_1.png
41 ms
interview_1.jpg
45 ms
interview_2.png
54 ms
gaosuan2.png
160 ms
transfertocs3.png
57 ms
consulting.jpg
82 ms
m1.jpg
83 ms
m2.jpg
55 ms
f1.jpg
57 ms
bg-heading.png
62 ms
IMAGE-Palindromes1.jpg
81 ms
matrix.png
60 ms
letters.jpg
83 ms
elements.jpg
79 ms
mechat.js
2287 ms
jquery-1.11.0.min.js
84 ms
jquery.touchSwipe.min.js
78 ms
gauge.min.js
77 ms
inview.js
79 ms
jquery.themepunch.plugins.min.js
73 ms
jquery.themepunch.revolution.min.js
76 ms
jquery.scrollTo.min.js
344 ms
jquery.colorbox-min.js
347 ms
pi.global.js
346 ms
pi.slider.js
345 ms
pi.init.slider.js
342 ms
jquery.easing.1.3.js
348 ms
pi.counter.js
348 ms
pi.init.counter.js
349 ms
pi.parallax.js
364 ms
pi.init.parallax.js
358 ms
pi.init.revolutionSlider.js
339 ms
pi.init.social.js
341 ms
pi.init.tab.js
333 ms
pi.tab.js
348 ms
pi.accordion.js
345 ms
pi.init.animations.js
346 ms
player.js
402 ms
player.css
405 ms
ga.js
414 ms
vuid.min.js
412 ms
tree.jpg
338 ms
Quora.jpg
399 ms
linkedin.jpeg
399 ms
uber-logo.jpeg
405 ms
youtube.jpeg
509 ms
yelp.jpeg
393 ms
logo-opacity-dark.png
401 ms
fontawesome-webfont.woff
75 ms
fontello.woff
82 ms
overlay.png
118 ms
proxy.html
46 ms
544598861.jpg
59 ms
__utm.gif
25 ms
jiuzhang.com accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
jiuzhang.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
Issues were logged in the Issues panel in Chrome Devtools
jiuzhang.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
ZH
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jiuzhang.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Jiuzhang.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
jiuzhang.com
Open Graph description is not detected on the main page of Jiuzhang. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: