7 sec in total
521 ms
6.4 sec
73 ms
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Visit vntub.comWe analyzed Vntub.com page load time and found that the first response time was 521 ms and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
vntub.com performance score
name
value
score
weighting
Value0
0/100
10%
Value0
0/100
25%
Value0
0/100
10%
Value0
0/100
30%
Value0.002
100/100
15%
Value0
0/100
10%
521 ms
874 ms
45 ms
16 ms
1013 ms
Our browser made a total of 11 requests to load all elements on the main page. We found that 18% of them (2 requests) were addressed to the original Vntub.com, 36% (4 requests) were made to Cdn.vntub.com and 27% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (4 sec) relates to the external source Cdn.vntub.com.
Page size can be reduced by 35.3 kB (60%)
58.8 kB
23.5 kB
In fact, the total size of Vntub.com main page is 58.8 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. 20% of websites need less resources to load. Javascripts take 53.8 kB which makes up the majority of the site volume.
Potential reduce by 3.3 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 3.3 kB or 65% of the original size.
Potential reduce by 32.0 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 32.0 kB or 59% of the original size.
Number of requests can be reduced by 5 (56%)
9
4
The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vntub. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.
vntub.com
521 ms
www.vntub.com
874 ms
gtm.js
45 ms
jquery-2.1.4.min.js
16 ms
jquery.qtip.min.js
1013 ms
analytics.js
8 ms
linkid.js
9 ms
collect
3 ms
collect
64 ms
vntub.js
4010 ms
progress.gif
4 ms
vntub.com 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
Document doesn't have a <title> element
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
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.
vntub.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Browser errors were logged to the console
vntub.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Document doesn't have a <title> element
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vntub.com 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 Vntub.com 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.
vntub.com
Open Graph data is detected on the main page of PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this: