13.9 sec in total
2.2 sec
10.8 sec
841 ms
Visit vinacert.vn now to see the best up-to-date Vina Cert content for Vietnam and also check out these interesting facts you probably never knew about vinacert.vn
Thử nghiệm: VinaCert là tổ chức thử nghiệm duy nhất của Việt Nam được Hiệp hội Công nhận Phòng thử nghiệm Hoa Kỳ (A2LA) - công nhận đủ năng lực theo tiêu chuẩn quốc tế ISO/IEC 17025:2017 Chứng nhận: H...
Visit vinacert.vnWe analyzed Vinacert.vn page load time and found that the first response time was 2.2 sec and then it took 11.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
vinacert.vn performance score
name
value
score
weighting
Value5.4 s
6/100
10%
Value9.7 s
0/100
25%
Value11.0 s
6/100
10%
Value1,120 ms
23/100
30%
Value0.021
100/100
15%
Value16.2 s
6/100
10%
2240 ms
5 ms
1856 ms
856 ms
6 ms
Our browser made a total of 113 requests to load all elements on the main page. We found that 75% of them (85 requests) were addressed to the original Vinacert.vn, 9% (10 requests) were made to Google.com and 4% (4 requests) were made to Css-dashboard.subiz.com. The less responsive or slowest element that took the longest time to load (5.6 sec) belongs to the original domain Vinacert.vn.
Page size can be reduced by 851.7 kB (37%)
2.3 MB
1.4 MB
In fact, the total size of Vinacert.vn main page is 2.3 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. 50% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.
Potential reduce by 83.0 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 13.5 kB, which is 13% 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 83.0 kB or 82% of the original size.
Potential reduce by 238.8 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, Vina Cert needs image optimization as it can save up to 238.8 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 285.5 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 285.5 kB or 62% of the original size.
Potential reduce by 244.4 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. Vinacert.vn needs all CSS files to be minified and compressed as it can save up to 244.4 kB or 81% of the original size.
Number of requests can be reduced by 33 (31%)
108
75
The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vina Cert. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.
vinacert.vn
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analytics.js
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jquery.min.js
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vinacert.vn 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.
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
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
vinacert.vn 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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
vinacert.vn 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
VI
VI
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vinacert.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it matches the claimed language. Our system also found out that Vinacert.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.
vinacert.vn
Open Graph description is not detected on the main page of Vina Cert. 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: