1.2 sec in total
450 ms
581 ms
126 ms
Click here to check amazing Cen content. Otherwise, check out these important facts you probably never knew about cen.vn
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Visit cen.vnWe analyzed Cen.vn page load time and found that the first response time was 450 ms and then it took 707 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.
cen.vn performance score
name
value
score
weighting
Value4.0 s
22/100
10%
Value4.2 s
44/100
25%
Value11.6 s
5/100
10%
Value460 ms
62/100
30%
Value0
100/100
15%
Value9.3 s
32/100
10%
450 ms
120 ms
Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to Cen.vn and no external sources were called. The less responsive or slowest element that took the longest time to load (450 ms) belongs to the original domain Cen.vn.
Page size can be reduced by 159 B (1%)
20.2 kB
20.0 kB
In fact, the total size of Cen.vn main page is 20.2 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 19.7 kB which makes up the majority of the site volume.
Potential reduce by 155 B
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 155 B or 32% of the original size.
Potential reduce by 4 B
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. Cen images are well optimized though.
We found no issues to fix!
1
1
The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cen. According to our analytics all requests are already optimized.
cen.vn
450 ms
domain-sale.jpg
120 ms
cen.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
Links do not have a discernible name
cen.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
cen.vn SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
N/A
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cen.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 Cen.vn main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
cen.vn
Open Graph description is not detected on the main page of Cen. 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: