Tools & Wizards About Us
korea.edu screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 74

    SEO

    Google-friendlier than
    32% of websites

korea.edu

리다이렉트용 고려대학교 INDEX

Page Load Speed

19.3 sec in total

First Response

770 ms

Resources Loaded

18 sec

Page Rendered

558 ms

korea.edu screenshot

About Website

Click here to check amazing Korea content for United States. Otherwise, check out these important facts you probably never knew about korea.edu

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Key Findings

We analyzed Korea.edu page load time and found that the first response time was 770 ms and then it took 18.5 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

korea.edu performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value15.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value17.7 s

0/100

25%

SI (Speed Index)

Value29.0 s

0/100

10%

TBT (Total Blocking Time)

Value450 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value18.8 s

3/100

10%

Network Requests Diagram

korea.edu

770 ms

analytics.js

23 ms

index.do

1574 ms

collect

12 ms

editor.css

525 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Korea.edu, 95% (55 requests) were made to Korea.ac.kr and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (13.2 sec) relates to the external source Korea.ac.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 649.1 kB (74%)

Content Size

878.9 kB

After Optimization

229.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Korea.edu main page is 878.9 kB. 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. Javascripts take 630.1 kB which makes up the majority of the site volume.

HTML Optimization

-45%

Potential reduce by 561 B

  • Original 1.2 kB
  • After minification 1.2 kB
  • After compression 678 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. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 561 B or 45% of the original size.

Image Optimization

-25%

Potential reduce by 24.9 kB

  • Original 98.5 kB
  • After minification 73.6 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, Korea needs image optimization as it can save up to 24.9 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-79%

Potential reduce by 496.2 kB

  • Original 630.1 kB
  • After minification 471.0 kB
  • After compression 133.9 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 496.2 kB or 79% of the original size.

CSS Optimization

-85%

Potential reduce by 127.4 kB

  • Original 149.1 kB
  • After minification 132.8 kB
  • After compression 21.7 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. Korea.edu needs all CSS files to be minified and compressed as it can save up to 127.4 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (9%)

Requests Now

55

After Optimization

50

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Korea. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

korea.edu

korea.edu

770 ms

analytics.js

analytics.js

23 ms

index.do

index.do

1574 ms

collect

collect

12 ms

editor.css

editor.css

525 ms

common.css

common.css

1851 ms

main2.css

main2.css

1005 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

1748 ms

jquery-ui.js

jquery-ui.js

3217 ms

jquery.easing.1.3.min.js

jquery.easing.1.3.min.js

744 ms

jquery.cookie.js

jquery.cookie.js

956 ms

common.js

common.js

1483 ms

popupZone_cookie.js

popupZone_cookie.js

1168 ms

contents.css

contents.css

736 ms

btn_users.gif

btn_users.gif

3145 ms

bar_users.gif

bar_users.gif

3145 ms

bar_search_right.gif

bar_search_right.gif

3147 ms

btn_search.gif

btn_search.gif

3151 ms

submit_search.gif

submit_search.gif

3143 ms

btn_region.gif

btn_region.gif

3148 ms

bg_main_popupzone.gif

bg_main_popupzone.gif

3152 ms

bg_main_popupzone_line.gif

bg_main_popupzone_line.gif

3133 ms

h1_logo.gif

h1_logo.gif

3136 ms

m_gnb2.png

m_gnb2.png

3133 ms

gnb1.gif

gnb1.gif

3134 ms

gnb2.gif

gnb2.gif

3134 ms

gnb3.gif

gnb3.gif

3134 ms

gnb4.gif

gnb4.gif

3136 ms

gnb5.gif

gnb5.gif

3135 ms

gnb6.gif

gnb6.gif

3137 ms

gnb_submenu_bg.png

gnb_submenu_bg.png

3136 ms

egovtemp_201509020335414970.jpg

egovtemp_201509020335414970.jpg

8723 ms

bg_cont.png

bg_cont.png

3136 ms

egovtemp_201509020242384390.png

egovtemp_201509020242384390.png

3138 ms

egovtemp_201510011158054280.png

egovtemp_201510011158054280.png

3138 ms

egovtemp_201509020253181190.png

egovtemp_201509020253181190.png

3139 ms

main_text_prev.png

main_text_prev.png

3136 ms

main_text_next.png

main_text_next.png

3138 ms

egovtemp_201509020241102680.jpg

egovtemp_201509020241102680.jpg

13169 ms

egovtemp_201509020240380880.png

egovtemp_201509020240380880.png

3140 ms

egovtemp_201509020251466110.png

egovtemp_201509020251466110.png

3138 ms

egovtemp_201509020252044410.png

egovtemp_201509020252044410.png

3138 ms

egovtemp_201511090607020270.jpg

egovtemp_201511090607020270.jpg

9432 ms

egovtemp_201509020238010110.png

egovtemp_201509020238010110.png

3139 ms

egovtemp_201407180741477610.png

egovtemp_201407180741477610.png

3140 ms

egovtemp_201407180741550730.png

egovtemp_201407180741550730.png

3139 ms

egovtemp_201511100320055660.jpg

egovtemp_201511100320055660.jpg

9323 ms

egovtemp_201511100320211920.png

egovtemp_201511100320211920.png

3140 ms

egovtemp_201511100320304980.png

egovtemp_201511100320304980.png

3141 ms

egovtemp_201511100320358380.png

egovtemp_201511100320358380.png

3172 ms

NanumGothicBold.woff

NanumGothicBold.woff

9586 ms

nanumgothic.woff

nanumgothic.woff

9862 ms

indecator.png

indecator.png

5815 ms

cont_toggle.png

cont_toggle.png

6028 ms

btn_controller.png

btn_controller.png

6240 ms

btn_top.png

btn_top.png

6412 ms

h1_logo_foot.gif

h1_logo_foot.gif

6452 ms

bg_select_style1.gif

bg_select_style1.gif

6525 ms

Accessibility Review

korea.edu accessibility score

69

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Buttons do not have an accessible name

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>).

High

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

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

korea.edu 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

korea.edu SEO score

74

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

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

    N/A

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Korea.edu can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Korea.edu 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

korea.edu

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