61 sec in total
3 sec
57.5 sec
477 ms
Visit 51sunray.com now to see the best up-to-date 51 Sunray content and also check out these interesting facts you probably never knew about 51sunray.com
上海桑锐电子科技股份有限公司成立于2004年,是物联网及智慧城市解决方案专业提供商。公司以物联网、大数据、云计算、AI、移动互联等新一代信息技术为驱动,致力于物联网及智慧城市行业解决方案的研究与应用,为行业赋能,为社会创造价值。
Visit 51sunray.comWe analyzed 51sunray.com page load time and found that the first response time was 3 sec and then it took 58 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 25 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
51sunray.com performance score
name
value
score
weighting
Value6.2 s
3/100
10%
Value32.9 s
0/100
25%
Value24.2 s
0/100
10%
Value1,460 ms
15/100
30%
Value0.001
100/100
15%
Value9.6 s
29/100
10%
3038 ms
16126 ms
537 ms
549 ms
1105 ms
Our browser made a total of 132 requests to load all elements on the main page. We found that 70% of them (92 requests) were addressed to the original 51sunray.com, 7% (9 requests) were made to Sysimages.tq.cn and 6% (8 requests) were made to Apps.bdimg.com. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain 51sunray.com.
Page size can be reduced by 485.6 kB (26%)
1.8 MB
1.4 MB
In fact, the total size of 51sunray.com main page is 1.8 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. 50% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 233.1 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 31.9 kB, which is 11% 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 233.1 kB or 79% of the original size.
Potential reduce by 87.4 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. 51 Sunray images are well optimized though.
Potential reduce by 107.6 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 107.6 kB or 60% of the original size.
Potential reduce by 57.5 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. 51sunray.com needs all CSS files to be minified and compressed as it can save up to 57.5 kB or 88% of the original size.
Number of requests can be reduced by 39 (38%)
104
65
The browser has sent 104 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Sunray. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
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51sunray.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
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.
51sunray.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
Browser errors were logged to the console
51sunray.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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51sunray.com 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 51sunray.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.
51sunray.com
Open Graph description is not detected on the main page of 51 Sunray. 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: