20.4 sec in total
675 ms
19.4 sec
346 ms
Visit lighting.cn now to see the best up-to-date Lighting content and also check out these interesting facts you probably never knew about lighting.cn
南通精准(东南)照明电器有限公司成立于2001年,从事特殊光源的研究开发和生产。产品广泛应用于医疗仪器,舞台灯光,工业检测和航空等领域,用户遍布世界各地。随着产品开始投放国内市场,DONAR(用户多称为“东亚”)和TECH-JAPAN字眼渐渐被用户关注和接受。联系方式:13906294040
Visit lighting.cnWe analyzed Lighting.cn page load time and found that the first response time was 675 ms and then it took 19.8 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.
lighting.cn performance score
name
value
score
weighting
Value2.9 s
53/100
10%
Value4.5 s
37/100
25%
Value16.9 s
0/100
10%
Value110 ms
97/100
30%
Value0.234
53/100
15%
Value11.5 s
18/100
10%
675 ms
950 ms
413 ms
619 ms
702 ms
Our browser made a total of 57 requests to load all elements on the main page. We found that all of those requests were addressed to Lighting.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (15.5 sec) belongs to the original domain Lighting.cn.
Page size can be reduced by 910.0 kB (8%)
11.3 MB
10.4 MB
In fact, the total size of Lighting.cn main page is 11.3 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. 60% of websites need less resources to load. Images take 10.6 MB which makes up the majority of the site volume.
Potential reduce by 78.7 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 16.2 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 78.7 kB or 90% of the original size.
Potential reduce by 514.6 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. Lighting images are well optimized though.
Potential reduce by 30.5 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 30.5 kB or 12% of the original size.
Potential reduce by 286.1 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. Lighting.cn needs all CSS files to be minified and compressed as it can save up to 286.1 kB or 80% of the original size.
Number of requests can be reduced by 3 (6%)
53
50
The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lighting. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
lighting.cn
675 ms
lighting.cn
950 ms
basic.css
413 ms
index_en.css
619 ms
lang_json_en.js
702 ms
basic.js
1102 ms
met_stat.js
705 ms
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205 ms
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13153 ms
metinfo-icon1.woff
11843 ms
metinfo-icon2.woff
11909 ms
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12570 ms
index_en.js
12197 ms
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15281 ms
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15545 ms
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13526 ms
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11668 ms
2854 ms
lighting.cn 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
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role]s are not contained by their required parent element
ARIA toggle fields do not have accessible names
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.
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
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>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
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.
lighting.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
lighting.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
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lighting.cn can be misinterpreted by Google and other search engines. Our service has detected that English 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 Lighting.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.
lighting.cn
Open Graph description is not detected on the main page of Lighting. 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: