Tools & Wizards About Us
ioe.vn screenshot

Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

ioe.vn

IOE: Hấp dẫn - mê say - thấy ngay kết quả - Trang chủ

Page Load Speed

7.4 sec in total

First Response

62 ms

Resources Loaded

6.8 sec

Page Rendered

499 ms

ioe.vn screenshot

About Website

Visit ioe.vn now to see the best up-to-date IOE content for Vietnam and also check out these interesting facts you probably never knew about ioe.vn

Olympic tiếng anh, thi tiếng anh internet, thi tiếng anh trực tuyến, kiểm tra kiến thức tiếng anh,English Online Contest, Olympic English, goIOE, IOE, hấp dẫn, mê say, kết quả

Visit ioe.vn

Key Findings

We analyzed Ioe.vn page load time and found that the first response time was 62 ms 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

ioe.vn performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

5/100

10%

LCP (Largest Contentful Paint)

Value26.2 s

0/100

25%

SI (Speed Index)

Value21.3 s

0/100

10%

TBT (Total Blocking Time)

Value2,450 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.368

29/100

15%

TTI (Time to Interactive)

Value24.4 s

0/100

10%

Network Requests Diagram

ioe.vn

62 ms

trang-chu

1059 ms

css

50 ms

css

68 ms

jquery.js

2094 ms

Our browser made a total of 107 requests to load all elements on the main page. We found that 42% of them (45 requests) were addressed to the original Ioe.vn, 10% (11 requests) were made to Fonts.gstatic.com and 7% (8 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (2.6 sec) relates to the external source Static.ioe.vn.

Page Optimization Overview & Recommendations

Page size can be reduced by 390.7 kB (11%)

Content Size

3.7 MB

After Optimization

3.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ioe.vn main page is 3.7 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. 70% of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 66.9 kB

  • Original 80.7 kB
  • After minification 59.9 kB
  • After compression 13.9 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 20.8 kB, which is 26% 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 66.9 kB or 83% of the original size.

Image Optimization

-14%

Potential reduce by 298.7 kB

  • Original 2.1 MB
  • After minification 1.8 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, IOE needs image optimization as it can save up to 298.7 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 18.0 kB

  • Original 1.4 MB
  • After minification 1.4 MB
  • After compression 1.4 MB

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. This website has mostly compressed JavaScripts.

CSS Optimization

-10%

Potential reduce by 7.2 kB

  • Original 68.9 kB
  • After minification 68.9 kB
  • After compression 61.7 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. Ioe.vn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 66 (70%)

Requests Now

94

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 94 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IOE. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 43 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ioe.vn

ioe.vn

62 ms

trang-chu

trang-chu

1059 ms

css

css

50 ms

css

css

68 ms

jquery.js

jquery.js

2094 ms

popper.min.js

popper.min.js

1249 ms

moment_2.24.0.js

moment_2.24.0.js

1995 ms

pdfobject.js

pdfobject.js

53 ms

bootstrap.min.css

bootstrap.min.css

1770 ms

bootstrap-datepicker.min.css

bootstrap-datepicker.min.css

66 ms

bootstrap.min.js

bootstrap.min.js

82 ms

bootstrap-datepicker.min.js

bootstrap-datepicker.min.js

98 ms

bootstrap-datepicker.vi.min.js

bootstrap-datepicker.vi.min.js

114 ms

animate.css

animate.css

145 ms

site_style.css

site_style.css

169 ms

Loading.js

Loading.js

194 ms

SessionUpdater.js

SessionUpdater.js

220 ms

IOEMain.js

IOEMain.js

248 ms

adsbygoogle.js

adsbygoogle.js

160 ms

advzone-define-pos.js

advzone-define-pos.js

59 ms

advzone.js

advzone.js

74 ms

CheckThiIOE.js

CheckThiIOE.js

21 ms

HomePage.js

HomePage.js

20 ms

main.js

main.js

19 ms

ioeHeader.js

ioeHeader.js

33 ms

ioecv.js

ioecv.js

35 ms

ioeFooter.js

ioeFooter.js

47 ms

wow.min.js

wow.min.js

55 ms

ComLibs.js

ComLibs.js

20 ms

configSSO.js

configSSO.js

63 ms

goSSOClient.js

goSSOClient.js

79 ms

goEduSSOSDKNet.js

goEduSSOSDKNet.js

81 ms

vcd15cbe7772f49c399c6a5babf22c1241717689176015

vcd15cbe7772f49c399c6a5babf22c1241717689176015

76 ms

main_style.css

main_style.css

31 ms

gtm.js

gtm.js

103 ms

spc.php

spc.php

976 ms

fl.js

fl.js

970 ms

slotcar_library.js

slotcar_library.js

89 ms

show_ads_impl.js

show_ads_impl.js

386 ms

icon-hotro.png

icon-hotro.png

1053 ms

mini%20banner%20copy%204@2x(1).png

mini%20banner%20copy%204@2x(1).png

122 ms

minibannerttn.jpg

minibannerttn.jpg

2138 ms

goinamhoc2024_2025.png

goinamhoc2024_2025.png

2578 ms

Screenshot%20(1434).png

Screenshot%20(1434).png

2602 ms

icon_person.png

icon_person.png

1048 ms

icon_zalo.png

icon_zalo.png

1047 ms

icon_fb.png

icon_fb.png

1048 ms

icon_mobile.png

icon_mobile.png

1048 ms

icon_tel.png

icon_tel.png

118 ms

logo_nha_nuoc.jpg

logo_nha_nuoc.jpg

139 ms

Logo_VTC.png

Logo_VTC.png

181 ms

ioe-logo-white.png

ioe-logo-white.png

208 ms

Frame.png

Frame.png

220 ms

image%2014.png

image%2014.png

240 ms

image%2015.png

image%2015.png

255 ms

telephone.png

telephone.png

269 ms

image%2016.png

image%2016.png

281 ms

img-teacher.png

img-teacher.png

298 ms

ioe-logo.png

ioe-logo.png

1405 ms

KFOmCnqEu92Fr1Me5Q.ttf

KFOmCnqEu92Fr1Me5Q.ttf

172 ms

KFOlCnqEu92Fr1MmEU9vAw.ttf

KFOlCnqEu92Fr1MmEU9vAw.ttf

190 ms

KFOlCnqEu92Fr1MmSU5vAw.ttf

KFOlCnqEu92Fr1MmSU5vAw.ttf

191 ms

KFOlCnqEu92Fr1MmWUlvAw.ttf

KFOlCnqEu92Fr1MmWUlvAw.ttf

190 ms

zrt_lookup.html

zrt_lookup.html

158 ms

ads

ads

551 ms

bg-banner.jpg

bg-banner.jpg

2186 ms

LDItaoyNOAY6Uewc665JcIzCKsKc_M9flwmM.otf

LDItaoyNOAY6Uewc665JcIzCKsKc_M9flwmM.otf

154 ms

bannertrangchubetia.jpg

bannertrangchubetia.jpg

69 ms

bg-teacher-parent.jpg

bg-teacher-parent.jpg

1356 ms

KFOkCnqEu92Fr1Mu52xP.ttf

KFOkCnqEu92Fr1Mu52xP.ttf

81 ms

KFOjCnqEu92Fr1Mu51S7ABc9.ttf

KFOjCnqEu92Fr1Mu51S7ABc9.ttf

80 ms

KFOjCnqEu92Fr1Mu51TjARc9.ttf

KFOjCnqEu92Fr1Mu51TjARc9.ttf

99 ms

KFOjCnqEu92Fr1Mu51TzBhc9.ttf

KFOjCnqEu92Fr1Mu51TzBhc9.ttf

101 ms

lg.php

lg.php

248 ms

reactive_library.js

reactive_library.js

160 ms

ca-pub-0208644871231718

ca-pub-0208644871231718

121 ms

ads

ads

438 ms

ads

ads

440 ms

ads

ads

304 ms

ads

ads

564 ms

load_preloaded_resource.js

load_preloaded_resource.js

38 ms

abg_lite.js

abg_lite.js

39 ms

s

s

31 ms

window_focus.js

window_focus.js

46 ms

qs_click_protection.js

qs_click_protection.js

49 ms

ufs_web_display.js

ufs_web_display.js

24 ms

ee48bc36d701edb421da8ed516283a0c.js

ee48bc36d701edb421da8ed516283a0c.js

45 ms

fullscreen_api_adapter.js

fullscreen_api_adapter.js

157 ms

interstitial_ad_frame.js

interstitial_ad_frame.js

165 ms

icon.png

icon.png

23 ms

feedback_grey600_24dp.png

feedback_grey600_24dp.png

154 ms

settings_grey600_24dp.png

settings_grey600_24dp.png

168 ms

css

css

43 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

8 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

6 ms

wJiNEMIFAPB28UFvxM_UYtYFK_ILnv1_rxRzUTsn-Pg.js

wJiNEMIFAPB28UFvxM_UYtYFK_ILnv1_rxRzUTsn-Pg.js

48 ms

8c927ae55f7ea4b10e6902b5bd363ad5.js

8c927ae55f7ea4b10e6902b5bd363ad5.js

11 ms

21ec13d5ce36ffe35a16b14abe035176.js

21ec13d5ce36ffe35a16b14abe035176.js

19 ms

cookie_push_onload.html

cookie_push_onload.html

104 ms

usersync.aspx

usersync.aspx

46 ms

pixel

pixel

24 ms

pixel

pixel

21 ms

pixel

pixel

23 ms

pixel

pixel

29 ms

activeview

activeview

113 ms

pixel

pixel

20 ms

pixel

pixel

19 ms

Accessibility Review

ioe.vn accessibility score

85

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.

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

ioe.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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

ioe.vn SEO score

82

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

    VI

  • Encoding

    UTF-8

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

ioe.vn

Open Graph data is detected on the main page of IOE. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: