Tools & Wizards About Us

Report Summary

  • 36

    Performance

    Renders faster than
    55% of other websites

  • 47

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

yellowpages.vnn.vn

Trang Vàng - Những Trang Vàng Doanh Nghiệp Việt Nam

Page Load Speed

9.3 sec in total

First Response

2 sec

Resources Loaded

7.1 sec

Page Rendered

255 ms

About Website

Welcome to yellowpages.vnn.vn homepage info - get ready to check Yellowpages Vnn best content for Vietnam right away, or after learning these important things about yellowpages.vnn.vn

Trang vàng Việt Nam - Danh bạ doanh nghiệp lớn nhất Việt nam, cung cấp thông tin hơn 250.000 doanh nghiệp, 3.000 lĩnh vực kinh doanh, 1.000.000 sản phẩm dịch vụ

Visit yellowpages.vnn.vn

Key Findings

We analyzed Yellowpages.vnn.vn page load time and found that the first response time was 2 sec and then it took 7.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

yellowpages.vnn.vn performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.3 s

1/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value23.6 s

0/100

10%

TBT (Total Blocking Time)

Value500 ms

58/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.9 s

35/100

10%

Network Requests Diagram

yellowpages.vnn.vn

1989 ms

yellowpagescssnew.css

682 ms

autocomplete.css

482 ms

jquery.js

1004 ms

dimensions.js

510 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 85% of them (45 requests) were addressed to the original Yellowpages.vnn.vn, 4% (2 requests) were made to S7.addthis.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.8 sec) relates to the external source Trangvangvietnam.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 405.8 kB (45%)

Content Size

901.8 kB

After Optimization

496.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Yellowpages.vnn.vn main page is 901.8 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. 25% of websites need less resources to load. Javascripts take 502.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 69.5 kB

  • Original 91.6 kB
  • After minification 87.8 kB
  • After compression 22.1 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 69.5 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 7.9 kB

  • Original 284.0 kB
  • After minification 276.1 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. Yellowpages Vnn images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 309.4 kB

  • Original 502.5 kB
  • After minification 497.6 kB
  • After compression 193.1 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 309.4 kB or 62% of the original size.

CSS Optimization

-80%

Potential reduce by 19.0 kB

  • Original 23.7 kB
  • After minification 18.5 kB
  • After compression 4.7 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. Yellowpages.vnn.vn needs all CSS files to be minified and compressed as it can save up to 19.0 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (40%)

Requests Now

52

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Yellowpages Vnn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

yellowpages.vnn.vn accessibility score

47

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

yellowpages.vnn.vn best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

yellowpages.vnn.vn SEO score

64

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    VI

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Yellowpages.vnn.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 Yellowpages.vnn.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.

Social Sharing Optimization

Open Graph description is not detected on the main page of Yellowpages Vnn. 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: