6.9 sec in total
1.1 sec
5.5 sec
292 ms
Welcome to semi.cas.cn homepage info - get ready to check Semi Cas best content for China right away, or after learning these important things about semi.cas.cn
Visit semi.cas.cnWe analyzed Semi.cas.cn page load time and found that the first response time was 1.1 sec and then it took 5.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
semi.cas.cn performance score
name
value
score
weighting
Value1.0 s
100/100
10%
Value2.0 s
97/100
25%
Value4.3 s
75/100
10%
Value50 ms
100/100
30%
Value0.002
100/100
15%
Value1.0 s
100/100
10%
1082 ms
987 ms
1283 ms
537 ms
526 ms
Our browser made a total of 57 requests to load all elements on the main page. We found that 82% of them (47 requests) were addressed to the original Semi.cas.cn, 9% (5 requests) were made to Lib.semi.ac.cn and 4% (2 requests) were made to Dcs.conac.cn. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Semi.cas.cn.
Page size can be reduced by 241.1 kB (9%)
2.7 MB
2.4 MB
In fact, the total size of Semi.cas.cn main page is 2.7 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. 30% of websites need less resources to load. Images take 2.5 MB which makes up the majority of the site volume.
Potential reduce by 31.0 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 6.1 kB, which is 15% 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 31.0 kB or 77% of the original size.
Potential reduce by 99.0 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. Semi Cas images are well optimized though.
Potential reduce by 82.6 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 82.6 kB or 64% of the original size.
Potential reduce by 28.6 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. Semi.cas.cn needs all CSS files to be minified and compressed as it can save up to 28.6 kB or 81% of the original size.
Number of requests can be reduced by 9 (18%)
49
40
The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Semi Cas. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.
semi.cas.cn
1082 ms
style1.css
987 ms
jquery-1.6.2.min.js
1283 ms
common.js
537 ms
logo.jpg
526 ms
user.png
248 ms
envelope.png
256 ms
globe.png
271 ms
a_cas_png.png
485 ms
a_fenyuan_png.png
741 ms
1.png
2004 ms
2.png
2095 ms
3.png
2071 ms
4.png
2071 ms
5.png
2084 ms
user_hover.png
510 ms
envelope_hover.png
531 ms
globe_hover.png
533 ms
a_fenyuan_png_hover.png
715 ms
a_cas_png_hover.png
764 ms
touming.png
774 ms
W020160318363924971590.jpg
2944 ms
W020160318363934841027.jpg
2412 ms
W020160318363938579539.jpg
1678 ms
W020160318363940716982.jpg
1470 ms
W020160318363951709430.jpg
2304 ms
tg_flashbar.png
1037 ms
pagination.png
1317 ms
mrkr-more-heading.gif
1575 ms
bg-streamer-4.gif
1716 ms
bg-expandable-home.png
2090 ms
list_item_square_red.gif
1921 ms
W020160318363956843418.jpg
2211 ms
1.jpg
2402 ms
2.jpg
2861 ms
3.jpg
2704 ms
4.jpg
2562 ms
img_1.png
2646 ms
img_3.png
2680 ms
img_4.png
2817 ms
img_5.png
2887 ms
img_2.png
2947 ms
img_6.png
2952 ms
img_7.png
3072 ms
img_8.png
3118 ms
CA330000000604308030001.js
2003 ms
search02.png
732 ms
img_9.png
2895 ms
img_10.png
2968 ms
footer_heading_border.png
2960 ms
video.jpg
2729 ms
list_icon.png
2818 ms
cnz01zklogo.gif
2867 ms
gs.gif
820 ms
gs.gif
800 ms
blue.png
403 ms
sprit_small.gif
1307 ms
semi.cas.cn 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.
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
Form elements do not have associated labels
Links do not have a discernible name
semi.cas.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
semi.cas.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
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Semi.cas.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 Semi.cas.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.
semi.cas.cn
Open Graph description is not detected on the main page of Semi Cas. 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: