4.7 sec in total
971 ms
3.5 sec
181 ms
Visit nsca.vn now to see the best up-to-date NSCA content and also check out these interesting facts you probably never knew about nsca.vn
NSCA chuyên sản xuất và phân phối các sản phẩm kỹ thuật phụ trợ cho các hệ thống cơ điện công trình. Bộ sản phẩm của NSCA luôn được đánh giá cao và là tâm điểm theo dõi của thị trường sản xuất cùng ng...
Visit nsca.vnWe analyzed Nsca.vn page load time and found that the first response time was 971 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
nsca.vn performance score
name
value
score
weighting
Value4.7 s
13/100
10%
Value32.4 s
0/100
25%
Value21.5 s
0/100
10%
Value2,630 ms
4/100
30%
Value0.808
5/100
15%
Value63.1 s
0/100
10%
971 ms
704 ms
476 ms
497 ms
499 ms
Our browser made a total of 39 requests to load all elements on the main page. We found that 85% of them (33 requests) were addressed to the original Nsca.vn, 8% (3 requests) were made to V2.zopim.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Nsca.vn.
Page size can be reduced by 223.4 kB (39%)
570.8 kB
347.5 kB
In fact, the total size of Nsca.vn main page is 570.8 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. 30% of websites need less resources to load. Images take 308.4 kB which makes up the majority of the site volume.
Potential reduce by 12.9 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 12.9 kB or 70% of the original size.
Potential reduce by 25.0 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. NSCA images are well optimized though.
Potential reduce by 142.1 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 142.1 kB or 73% of the original size.
Potential reduce by 43.4 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. Nsca.vn needs all CSS files to be minified and compressed as it can save up to 43.4 kB or 86% of the original size.
Number of requests can be reduced by 23 (62%)
37
14
The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NSCA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
nsca.vn
971 ms
mootools.js
704 ms
caption.js
476 ms
system.css
497 ms
general.css
499 ms
editor.css
499 ms
template.css
522 ms
ja.script.js
715 ms
ja.transmenuh.css
741 ms
ja.transmenu.js
741 ms
cyan.css
742 ms
opacity.js
779 ms
ja-slideshow.js
933 ms
sl-1.jpg
1420 ms
quat.png
1491 ms
cua-gio.png
1501 ms
ong-gio.png
1745 ms
hoa_mini.jpg
1038 ms
bullet-list.gif
389 ms
header-top.jpg
778 ms
logo.gif
619 ms
header-bottom.jpg
848 ms
mainnav-active-fl-cyan.gif
1186 ms
mainnav-active-right-cyan.gif
1199 ms
mainnav-right.png
1194 ms
containerwrap-bg1.gif
1215 ms
containerwrap-bg2.gif
1228 ms
container-bg1.gif
1243 ms
container-bg2.gif
1698 ms
sl-2.jpg
1543 ms
shadow.gif
1614 ms
sep.gif
1628 ms
icon.png
1600 ms
analytics.js
5 ms
collect
11 ms
widget_v2.135.js
13 ms
__$$__stringtable_lang_vi.js
19 ms
avatar_simple_visitor.png
64 ms
aL63HcygAAVYuCCsAAA==
1 ms
nsca.vn 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.
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 IDs are not unique
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
nsca.vn 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
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
nsca.vn SEO score
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
VI
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nsca.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese 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 Nsca.vn 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.
nsca.vn
Open Graph description is not detected on the main page of NSCA. 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: