72.3 sec in total
8 sec
64 sec
304 ms
Click here to check amazing Cennavi content for China. Otherwise, check out these important facts you probably never knew about cennavi.com.cn
北京世纪高通科技有限公司,是一家拥有海量、多源位置大数据,构建了权威的全国位置数据仓库的公司,主要应用于政企、汽车厂商、互联网、交通以及物流等相关领域。公司聚焦于数据、算法和服务,可提供企业级位置智能方案,每天服务亿万用户,服务范围覆盖全国。
Visit cennavi.com.cnWe analyzed Cennavi.com.cn page load time and found that the first response time was 8 sec and then it took 64.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 33 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
cennavi.com.cn performance score
name
value
score
weighting
Value2.9 s
53/100
10%
Value10.0 s
0/100
25%
Value15.4 s
1/100
10%
Value450 ms
63/100
30%
Value0.547
13/100
15%
Value20.4 s
2/100
10%
8032 ms
3365 ms
20440 ms
20440 ms
14381 ms
Our browser made a total of 81 requests to load all elements on the main page. We found that all of those requests were addressed to Cennavi.com.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Cennavi.com.cn.
Page size can be reduced by 70.5 kB (50%)
141.6 kB
71.1 kB
In fact, the total size of Cennavi.com.cn main page is 141.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. Only 10% of websites need less resources to load. Images take 102.0 kB which makes up the majority of the site volume.
Potential reduce by 17.6 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 4.4 kB, which is 19% 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 17.6 kB or 76% of the original size.
Potential reduce by 40.0 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, Cennavi needs image optimization as it can save up to 40.0 kB or 39% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 2.8 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 2.8 kB or 76% of the original size.
Potential reduce by 10.1 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. Cennavi.com.cn needs all CSS files to be minified and compressed as it can save up to 10.1 kB or 80% of the original size.
We found no issues to fix!
47
47
The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cennavi. According to our analytics all requests are already optimized.
cennavi.com.cn
8032 ms
css.css
3365 ms
jquery-1.7.2.min.js
20440 ms
jquery.carouFredSel.js
20440 ms
base.js
14381 ms
index.js
2125 ms
body_bg.png
19984 ms
logo.png
4140 ms
logo2.png
12086 ms
header_s1.png
14165 ms
header_s2.png
3683 ms
weixin.jpg
19982 ms
header_s3.png
4798 ms
weibo.png
19982 ms
header_s4.png
5908 ms
201601071.png
19982 ms
home_banner.jpg
19983 ms
hm_pre.png
19984 ms
hm_next.png
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hm_app1.png
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hm_app2.png
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hm_app3.png
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hm_app4.png
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hm_pro1.jpg
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11977 ms
footer_tel.png
11614 ms
footer_ico1.png
19778 ms
footer_ico2.png
15125 ms
cennavi.com.cn accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
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
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.
cennavi.com.cn 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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
cennavi.com.cn SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cennavi.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Cennavi.com.cn 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.
cennavi.com.cn
Open Graph description is not detected on the main page of Cennavi. 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: