Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

dntech.vn

Giải pháp công nghệ bảo vệ con người và tài sản.

Page Load Speed

14 sec in total

First Response

3.5 sec

Resources Loaded

10.3 sec

Page Rendered

266 ms

dntech.vn screenshot

About Website

Click here to check amazing Dntech content for Vietnam. Otherwise, check out these important facts you probably never knew about dntech.vn

Công ty TNHH đầu tư và chuyển giao công nghệ DNTECH cung cấp, lắp đặt camera giám sát, hệ thống báo động chống trộm, nhà thông minh và các hệ thống mạng chuyên sâu.

Visit dntech.vn

Key Findings

We analyzed Dntech.vn page load time and found that the first response time was 3.5 sec and then it took 10.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

dntech.vn performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value17.4 s

0/100

25%

SI (Speed Index)

Value8.6 s

17/100

10%

TBT (Total Blocking Time)

Value230 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value7.0 s

53/100

10%

Network Requests Diagram

dntech.vn

3473 ms

reset.css

630 ms

style.css

752 ms

jquery-1.7.1.min.js

1483 ms

jquery.cycle.all.min.js

948 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 97% of them (56 requests) were addressed to the original Dntech.vn, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (4.2 sec) belongs to the original domain Dntech.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 257.2 kB (15%)

Content Size

1.8 MB

After Optimization

1.5 MB

In fact, the total size of Dntech.vn main page is 1.8 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. 45% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 18.9 kB

  • Original 23.7 kB
  • After minification 20.5 kB
  • After compression 4.8 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. This page needs HTML code to be minified as it can gain 3.2 kB, which is 14% 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 18.9 kB or 80% of the original size.

Image Optimization

-9%

Potential reduce by 143.7 kB

  • Original 1.6 MB
  • After minification 1.4 MB

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. Dntech images are well optimized though.

JavaScript Optimization

-59%

Potential reduce by 85.0 kB

  • Original 143.7 kB
  • After minification 142.9 kB
  • After compression 58.7 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 85.0 kB or 59% of the original size.

CSS Optimization

-80%

Potential reduce by 9.7 kB

  • Original 12.1 kB
  • After minification 8.8 kB
  • After compression 2.5 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. Dntech.vn needs all CSS files to be minified and compressed as it can save up to 9.7 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (5%)

Requests Now

57

After Optimization

54

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dntech. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

dntech.vn accessibility score

64

Accessibility Issues

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

dntech.vn best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

dntech.vn SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    N/A

  • Encoding

    Lê HUỳNH || LEHUYNH.COM

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dntech.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 Dntech.vn main page’s claimed encoding is lê huỳnh || lehuynh.com. 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.

Social Sharing Optimization

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