Tools & Wizards About Us
vntub.com screenshot

Report Summary

  • 0

    Performance

  • 38

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

vntub.com

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Page Load Speed

7 sec in total

First Response

521 ms

Resources Loaded

6.4 sec

Page Rendered

73 ms

vntub.com screenshot

About Website

Visit vntub.com now to see the best up-to-date Vntub content for Vietnam and also check out these interesting facts you probably never knew about vntub.com

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Visit vntub.com

Key Findings

We 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.

Performance Metrics

vntub.com performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

Network Requests Diagram

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

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 Optimization Overview & Recommendations

Page size can be reduced by 35.3 kB (60%)

Content Size

58.8 kB

After Optimization

23.5 kB

  • HTML
  • JavaScript

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.

HTML Optimization

-65%

Potential reduce by 3.3 kB

  • Original 5.0 kB
  • After minification 5.0 kB
  • After compression 1.8 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.

JavaScript Optimization

-59%

Potential reduce by 32.0 kB

  • Original 53.8 kB
  • After minification 53.8 kB
  • After compression 21.8 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.

Requests Breakdown

Number of requests can be reduced by 5 (56%)

Requests Now

9

After Optimization

4

  • Images
  • JavaScript

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.

Network Requests Diagram

vntub.com

vntub.com

521 ms

www.vntub.com

www.vntub.com

874 ms

gtm.js

gtm.js

45 ms

jquery-2.1.4.min.js

jquery-2.1.4.min.js

16 ms

jquery.qtip.min.js

jquery.qtip.min.js

1013 ms

analytics.js

analytics.js

8 ms

linkid.js

linkid.js

9 ms

collect

collect

3 ms

collect

collect

64 ms

vntub.js

vntub.js

4010 ms

progress.gif

progress.gif

4 ms

Accessibility Review

vntub.com accessibility score

38

Accessibility Issues

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

High

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

High

<html> element does not have a [lang] attribute

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

vntub.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

vntub.com SEO score

75

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Document doesn't have a <title> element

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    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.

Social Sharing Optimization

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: