Access donga.edu.vn. Đại học Đông Á - Dong A University | 0236 351 9929

name

value

score

weighting

FCP (First Contentful Paint)

Value13.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value25.1 s

0/100

25%

SI (Speed Index)

Value40.8 s

0/100

10%

TBT (Total Blocking Time)

Value41,940 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.089

92/100

15%

TTI (Time to Interactive)

Value77.9 s

0/100

10%

donga.edu.vn

5784 ms

module.css

1124 ms

default.css

1116 ms

skin.css

5122 ms

container.css

1160 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 81% of them (52 requests) were addressed to the original Donga.edu.vn, 5% (3 requests) were made to S1.mylivechat.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (8.6 sec) belongs to the original domain Donga.edu.vn.

Content Size

1.3 MB

After Optimization

676.9 kB

In fact, the total size of Donga.edu.vn main page is 1.3 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. 30% of websites need less resources to load. Images take 586.6 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 61.8 kB

Original 74.7 kB
After minification 63.6 kB
After compression 12.9 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 11.0 kB, which is 15% 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 61.8 kB or 83% of the original size.

Image Optimization

-13%

Potential reduce by 76.6 kB

Original 586.6 kB
After minification 510.0 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. Obviously, Dong A needs image optimization as it can save up to 76.6 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-75%

Potential reduce by 423.3 kB

Original 564.4 kB
After minification 431.2 kB
After compression 141.1 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 423.3 kB or 75% of the original size.

CSS Optimization

-85%

Potential reduce by 73.9 kB

Original 86.8 kB
After minification 71.0 kB
After compression 13.0 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. Donga.edu.vn needs all CSS files to be minified and compressed as it can save up to 73.9 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dong A. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

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

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

High

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Donga.edu.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 Donga.edu.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

donga.edu.vn

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Đại học Đông Á - Dong A University | 0236 351 9929 | Xét tuyển đại học Đà Nẵng

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

donga.edu.vn

module.css

default.css

skin.css

container.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

donga.edu.vn

module.css

default.css

skin.css

container.css

WebResource.axd

dnncore.js

dnn.js

ScriptResource.axd

ScriptResource.axd

menu_da.css

style.css

jquery.js

wowslider.js

script.js

nganhts.css

chatinline.aspx

livechat.aspx

menu.css

en-US.gif

vi-VN.gif

da.png

ts.png

hb.png

vs.png

ts.png

hb.png

vs.png

da.jpg

sv.jpg

dtao.jpg

cdong.jpg

new.gif

Hoi%20trai%20tieu%20vung%20song%20Mekong%20(1).jpg

thuchuctet.jpg

GapmatdauXuanBinhThan.JPG

facebook-icon.png

yt.png

icon175x175.png

top_bg.jpg

css

TC.PNG

DT.PNG