Tools & Wizards About Us
udn.vn screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    47% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 77% of websites

  • 42

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

udn.vn

Đại học Đà Nẵng

Page Load Speed

21.2 sec in total

First Response

4.8 sec

Resources Loaded

16.1 sec

Page Rendered

358 ms

udn.vn screenshot

About Website

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

Visit udn.vn

Key Findings

We analyzed Udn.vn page load time and found that the first response time was 4.8 sec and then it took 16.4 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

udn.vn performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value15.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value25.6 s

0/100

25%

SI (Speed Index)

Value28.9 s

0/100

10%

TBT (Total Blocking Time)

Value720 ms

41/100

30%

CLS (Cumulative Layout Shift)

Value0.062

97/100

15%

TTI (Time to Interactive)

Value20.3 s

2/100

10%

Network Requests Diagram

udn.vn

4796 ms

styles.css

1919 ms

selectbox.css

486 ms

side.css

751 ms

jquery-1.6.1.min.js

1807 ms

Our browser made a total of 111 requests to load all elements on the main page. We found that all of those requests were addressed to Udn.vn and no external sources were called. The less responsive or slowest element that took the longest time to load (6.7 sec) belongs to the original domain Udn.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 933.9 kB (21%)

Content Size

4.4 MB

After Optimization

3.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Udn.vn main page is 4.4 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. 35% of websites need less resources to load. Images take 4.0 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 76.4 kB

  • Original 89.4 kB
  • After minification 70.2 kB
  • After compression 13.0 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 19.2 kB, which is 22% 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 76.4 kB or 85% of the original size.

Image Optimization

-15%

Potential reduce by 613.3 kB

  • Original 4.0 MB
  • After minification 3.3 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. Obviously, Udn needs image optimization as it can save up to 613.3 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 147.2 kB

  • Original 201.8 kB
  • After minification 170.1 kB
  • After compression 54.6 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 147.2 kB or 73% of the original size.

CSS Optimization

-88%

Potential reduce by 97.1 kB

  • Original 110.8 kB
  • After minification 82.3 kB
  • After compression 13.7 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. Udn.vn needs all CSS files to be minified and compressed as it can save up to 97.1 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (10%)

Requests Now

110

After Optimization

99

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 110 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Udn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

udn.vn

udn.vn

4796 ms

styles.css

styles.css

1919 ms

selectbox.css

selectbox.css

486 ms

side.css

side.css

751 ms

jquery-1.6.1.min.js

jquery-1.6.1.min.js

1807 ms

jquery.selectbox-0.5.js

jquery.selectbox-0.5.js

819 ms

jquery.dimensions.js

jquery.dimensions.js

727 ms

jquery.accordion.js

jquery.accordion.js

1211 ms

jquery.infinitecarousel.js

jquery.infinitecarousel.js

1250 ms

jquery.cycle.all.js

jquery.cycle.all.js

1945 ms

jquery-latest.pack.js

jquery-latest.pack.js

1495 ms

jquery.selectbox.css

jquery.selectbox.css

1252 ms

jquery.selectbox-0.6.1.js

jquery.selectbox-0.6.1.js

1298 ms

jquery.lazyload.js

jquery.lazyload.js

1232 ms

flowplayer-3.2.6.min.js

flowplayer-3.2.6.min.js

471 ms

bangvang.png

bangvang.png

2294 ms

background.png

background.png

1049 ms

logo.png

logo.png

243 ms

dhdn.png

dhdn.png

245 ms

co_english.png

co_english.png

253 ms

menu_bg1_hv.png

menu_bg1_hv.png

258 ms

menu_bg2_hv.png

menu_bg2_hv.png

279 ms

menu_bg3_hv.png

menu_bg3_hv.png

484 ms

menu_bo.jpg

menu_bo.jpg

489 ms

sub_top.png

sub_top.png

503 ms

list_sub2.png

list_sub2.png

515 ms

sub_center2.png

sub_center2.png

557 ms

sub.png

sub.png

724 ms

sub_top_hover.png

sub_top_hover.png

731 ms

sub_hover3.png

sub_hover3.png

754 ms

sub_hover2.png

sub_hover2.png

772 ms

intro_botton_hv.png

intro_botton_hv.png

832 ms

side_body.png

side_body.png

964 ms

Happy_2016-700-1452054230.png

Happy_2016-700-1452054230.png

3393 ms

DH_Dang-1453262003.png

DH_Dang-1453262003.png

3255 ms

emma700-1449710740.png

emma700-1449710740.png

5419 ms

vjupc15_700-1441874599.png

vjupc15_700-1441874599.png

4459 ms

Banner-1444270374.bmp

Banner-1444270374.bmp

6006 ms

error.png

error.png

1304 ms

show.png

show.png

1569 ms

ttkdcl_680.png

ttkdcl_680.png

3686 ms

tapchikhoahoc.jpg

tapchikhoahoc.jpg

4256 ms

TCKH_CNVN.jpg

TCKH_CNVN.jpg

4119 ms

qcts2012.jpg

qcts2012.jpg

3953 ms

adv2_1.png

adv2_1.png

4222 ms

dtn_ud1.png

dtn_ud1.png

4604 ms

adv2_2.png

adv2_2.png

4487 ms

lirc2.png

lirc2.png

5259 ms

logocce1.png

logocce1.png

4737 ms

adv2_4.png

adv2_4.png

4752 ms

sdc.jpg

sdc.jpg

4847 ms

hinh-1.jpg

hinh-1.jpg

5295 ms

12798960_932646630189080_7857499999154268230_n.jpg

12798960_932646630189080_7857499999154268230_n.jpg

5047 ms

moujfe2016_340.jpg

moujfe2016_340.jpg

5336 ms

cchn340.jpg

cchn340.jpg

5519 ms

Thay%20Nam%20trao%20qua_0081%20-%20logo.JPG

Thay%20Nam%20trao%20qua_0081%20-%20logo.JPG

5817 ms

ts5_340.JPG

ts5_340.JPG

6664 ms

qc1.jpg

qc1.jpg

5446 ms

ud_340.jpg

ud_340.jpg

5336 ms

thi_sinh_khiem_thi340.jpg

thi_sinh_khiem_thi340.jpg

5520 ms

thi-sinh2340.jpg

thi-sinh2340.jpg

5555 ms

thumbnail_default.jpg

thumbnail_default.jpg

6629 ms

tmay_14_01340.jpg

tmay_14_01340.jpg

6007 ms

tnhe_14_04_340.jpg

tnhe_14_04_340.jpg

5792 ms

tktn_14_05340.jpg

tktn_14_05340.jpg

5799 ms

atgt13_340.JPG

atgt13_340.JPG

5561 ms

dai%20hoc%20da%20nang.jpg

dai%20hoc%20da%20nang.jpg

6015 ms

on%20tap%20vien%20chuc.jpg

on%20tap%20vien%20chuc.jpg

5810 ms

qc_nangluong.jpg

qc_nangluong.jpg

6477 ms

TT08_13.jpg

TT08_13.jpg

5906 ms

dtvt13_1340.JPG

dtvt13_1340.JPG

5746 ms

hoi%20nghi%20hieu%20truong%20(0).JPG

hoi%20nghi%20hieu%20truong%20(0).JPG

4360 ms

DHV_340.jpg

DHV_340.jpg

4091 ms

dhdn%20ra%20mat%20smartbook.jpg

dhdn%20ra%20mat%20smartbook.jpg

3995 ms

ki%20niem%2020%20nam%20thanh%20lap%20doan%20dhdn.png

ki%20niem%2020%20nam%20thanh%20lap%20doan%20dhdn.png

4702 ms

thanh_lich%20(0).JPG

thanh_lich%20(0).JPG

3698 ms

video_default.png

video_default.png

3808 ms

top_left.png

top_left.png

3507 ms

top_center.png

top_center.png

3412 ms

bo.png

bo.png

3446 ms

top_right.png

top_right.png

3401 ms

menu_left.png

menu_left.png

3330 ms

menu_center.png

menu_center.png

3376 ms

menu_right.png

menu_right.png

3341 ms

main_sub.png

main_sub.png

2991 ms

item_left.png

item_left.png

3015 ms

item_center.png

item_center.png

3022 ms

iten_right.png

iten_right.png

2965 ms

conts.png

conts.png

2859 ms

tag_content_1.png

tag_content_1.png

2769 ms

side_right_bgt.png

side_right_bgt.png

2748 ms

side_right_top.png

side_right_top.png

2649 ms

side_right_bgct2.png

side_right_bgct2.png

2631 ms

arrow.png

arrow.png

2663 ms

side_right_center.png

side_right_center.png

2712 ms

side_right_botton.png

side_right_botton.png

2767 ms

side_right_bgct.png

side_right_bgct.png

2497 ms

side_right_bgbt.png

side_right_bgbt.png

2372 ms

title.png

title.png

2348 ms

main_center.png

main_center.png

2202 ms

main_botton.png

main_botton.png

2247 ms

bd_footer.png

bd_footer.png

3737 ms

bg_dc.png

bg_dc.png

2169 ms

readmore.png

readmore.png

2003 ms

slide-bg.png

slide-bg.png

1928 ms

abc1.png

abc1.png

1863 ms

side_right_top_hv1.png

side_right_top_hv1.png

1782 ms

sub_left_hover.png

sub_left_hover.png

1856 ms

sub_center_hover.png

sub_center_hover.png

1768 ms

sub_right_hover.png

sub_right_hover.png

1744 ms

bt_conts.png

bt_conts.png

1678 ms

Accessibility Review

udn.vn accessibility score

91

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

udn.vn best practices score

42

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

udn.vn SEO score

76

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

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

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Udn.vn can be misinterpreted by Google and other search engines. Our service has detected that Vietnamese is used on the page, and it does not match the claimed English language. Our system also found out that Udn.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

udn.vn

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