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Report Summary

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    Performance

  • 0

    Accessibility

  • 0

    Best Practices

  • 0

    SEO

data4u.com.vn

đề thi thử thpt quốc gia

Page Load Speed

30.3 sec in total

First Response

5.7 sec

Resources Loaded

23.6 sec

Page Rendered

955 ms

data4u.com.vn screenshot

About Website

Welcome to data4u.com.vn homepage info - get ready to check Data 4 U best content for Vietnam right away, or after learning these important things about data4u.com.vn

đề thi thử thpt quốc gia

Visit data4u.com.vn

Key Findings

We analyzed Data4u.com.vn page load time and found that the first response time was 5.7 sec and then it took 24.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

data4u.com.vn performance score

0

Network Requests Diagram

data4u.com.vn

5691 ms

default.css

3386 ms

jquery-ui.css

1488 ms

jqueryslidemenu.css

574 ms

popup.css

575 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 66% of them (66 requests) were addressed to the original Data4u.com.vn, 8% (8 requests) were made to Google.com and 4% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (8.8 sec) belongs to the original domain Data4u.com.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 757.1 kB (32%)

Content Size

2.4 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Data4u.com.vn main page is 2.4 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. 50% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-9%

Potential reduce by 10 B

  • Original 108 B
  • After minification 108 B
  • After compression 98 B

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. This web page is already compressed.

Image Optimization

-6%

Potential reduce by 95.5 kB

  • Original 1.5 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. Data 4 U images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 548.7 kB

  • Original 779.6 kB
  • After minification 609.7 kB
  • After compression 230.9 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 548.7 kB or 70% of the original size.

CSS Optimization

-86%

Potential reduce by 112.9 kB

  • Original 132.0 kB
  • After minification 98.4 kB
  • After compression 19.1 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. Data4u.com.vn needs all CSS files to be minified and compressed as it can save up to 112.9 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (40%)

Requests Now

97

After Optimization

58

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 97 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Data 4 U. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

data4u.com.vn

data4u.com.vn

5691 ms

default.css

default.css

3386 ms

jquery-ui.css

jquery-ui.css

1488 ms

jqueryslidemenu.css

jqueryslidemenu.css

574 ms

popup.css

popup.css

575 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

2773 ms

jqueryslidemenu.js

jqueryslidemenu.js

856 ms

fb.js

fb.js

1144 ms

main.js

main.js

1150 ms

index_slide.js

index_slide.js

942 ms

adv_out.js

adv_out.js

86 ms

scroll_Ads.js

scroll_Ads.js

307 ms

jquery.cycle.all.2.72.js

jquery.cycle.all.2.72.js

609 ms

jquery.jcarousel.min.js

jquery.jcarousel.min.js

607 ms

stickytooltip.js

stickytooltip.js

581 ms

jquery-ui.js

jquery-ui.js

8768 ms

ajax.js

ajax.js

885 ms

plusone.js

plusone.js

225 ms

stickytooltip.css

stickytooltip.css

295 ms

menu.css

menu.css

299 ms

jcarousel.css

jcarousel.css

300 ms

ads.css

ads.css

293 ms

sdk.js

sdk.js

344 ms

analytics.js

analytics.js

129 ms

bgbody.png

bgbody.png

313 ms

btndanhmuc.png

btndanhmuc.png

313 ms

BANER2.jpg

BANER2.jpg

312 ms

cse.js

cse.js

138 ms

gtm.js

gtm.js

164 ms

btnUpload.png

btnUpload.png

291 ms

boxleft-title-bg.png

boxleft-title-bg.png

291 ms

thacsy.jpg

thacsy.jpg

3111 ms

boxleft-1icon2.png

boxleft-1icon2.png

588 ms

box1-title-bg.png

box1-title-bg.png

561 ms

box-tl-icon1.png

box-tl-icon1.png

542 ms

box-tl-icon2.png

box-tl-icon2.png

545 ms

box-tl-icon3.png

box-tl-icon3.png

1549 ms

box-tl-icon4.png

box-tl-icon4.png

860 ms

collect

collect

35 ms

jsapi

jsapi

77 ms

collect

collect

20 ms

default+en.css

default+en.css

69 ms

default.css

default.css

41 ms

default+en.I.js

default+en.I.js

202 ms

default.css

default.css

230 ms

253 ms

xd_arbiter.php

xd_arbiter.php

380 ms

xd_arbiter.php

xd_arbiter.php

748 ms

a

a

378 ms

img_pop.js

img_pop.js

127 ms

t.js

t.js

216 ms

csync

csync

353 ms

img_100x100.jpg

img_100x100.jpg

271 ms

adnow-mini-v2.png

adnow-mini-v2.png

102 ms

log.user-api.com

log.user-api.com

387 ms

st

st

374 ms

img_100x100.jpg

img_100x100.jpg

263 ms

img_100x100.jpg

img_100x100.jpg

324 ms

img_100x100.jpg

img_100x100.jpg

330 ms

collect

collect

272 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

271 ms

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02042016184114.jpg

618 ms

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02042016184023.jpg

875 ms

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02042016183948.jpg

298 ms

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374 ms

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409 ms

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408 ms

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867 ms

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693 ms

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693 ms

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694 ms

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774 ms

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990 ms

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1884 ms

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3044 ms

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1066 ms

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2051 ms

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6332 ms

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14042015145710.jpg

1267 ms

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1965 ms

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10072015162639.jpg

1558 ms

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2678 ms

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2809 ms

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3279 ms

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25042015092742.jpg

6406 ms

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27052015053609.jpg

4257 ms

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4273 ms

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4239 ms

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5935 ms

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4858 ms

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4568 ms

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4875 ms

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5462 ms

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8753 ms

13042015192831.jpg

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7742 ms

async-ads.js

async-ads.js

81 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

66 ms

small-logo.png

small-logo.png

81 ms

search_box_icon.png

search_box_icon.png

79 ms

clear.png

clear.png

152 ms

SEO Factors

data4u.com.vn SEO score

0

Language and Encoding

  • Language Detected

    VI

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Data4u.com.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 Data4u.com.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

data4u.com.vn

Open Graph description is not detected on the main page of Data 4 U. 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: