Tools & Wizards About Us
jongroeclass.co.kr screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    70% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

jongroeclass.co.kr

종로이클래스

Page Load Speed

25.6 sec in total

First Response

704 ms

Resources Loaded

24.1 sec

Page Rendered

759 ms

jongroeclass.co.kr screenshot

About Website

Welcome to jongroeclass.co.kr homepage info - get ready to check Jongroeclass best content for South Korea right away, or after learning these important things about jongroeclass.co.kr

종로학원 인터넷 캠퍼스 종로이클래스, 수능 모의고사, 논술 모의고사, 핵심체크, 정시 합격예측, 인터넷 강의

Visit jongroeclass.co.kr

Key Findings

We analyzed Jongroeclass.co.kr page load time and found that the first response time was 704 ms and then it took 24.9 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

jongroeclass.co.kr performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

19/100

10%

LCP (Largest Contentful Paint)

Value10.3 s

0/100

25%

SI (Speed Index)

Value8.0 s

22/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value9.5 s

30/100

10%

Network Requests Diagram

jongroeclass.co.kr

704 ms

www.jongroeclass.co.kr

1878 ms

common.css

700 ms

main2013.css

948 ms

script.js

1918 ms

Our browser made a total of 93 requests to load all elements on the main page. We found that 13% of them (12 requests) were addressed to the original Jongroeclass.co.kr, 76% (71 requests) were made to Img.jongroeclass.co.kr and 2% (2 requests) were made to Adlog.adinsight.co.kr. The less responsive or slowest element that took the longest time to load (20.2 sec) relates to the external source Img.jongroeclass.co.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 285.2 kB (42%)

Content Size

672.1 kB

After Optimization

386.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jongroeclass.co.kr main page is 672.1 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. 35% of websites need less resources to load. Images take 316.1 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 49.3 kB

  • Original 61.4 kB
  • After minification 49.7 kB
  • After compression 12.1 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 11.7 kB, which is 19% 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 49.3 kB or 80% of the original size.

Image Optimization

-6%

Potential reduce by 20.1 kB

  • Original 316.1 kB
  • After minification 296.1 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. Jongroeclass images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 201.1 kB

  • Original 275.9 kB
  • After minification 242.1 kB
  • After compression 74.8 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 201.1 kB or 73% of the original size.

CSS Optimization

-79%

Potential reduce by 14.7 kB

  • Original 18.6 kB
  • After minification 16.9 kB
  • After compression 3.9 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. Jongroeclass.co.kr needs all CSS files to be minified and compressed as it can save up to 14.7 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (9%)

Requests Now

88

After Optimization

80

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 88 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jongroeclass. 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 as a result speed up the page load time.

Network Requests Diagram

jongroeclass.co.kr

jongroeclass.co.kr

704 ms

www.jongroeclass.co.kr

www.jongroeclass.co.kr

1878 ms

common.css

common.css

700 ms

main2013.css

main2013.css

948 ms

script.js

script.js

1918 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

1682 ms

validation.js

validation.js

1009 ms

jquery.banner.js

jquery.banner.js

1160 ms

jquery.motionj.fadeBanner.js

jquery.motionj.fadeBanner.js

947 ms

conversion.js

conversion.js

37 ms

bg_header.gif

bg_header.gif

802 ms

bg_light.gif

bg_light.gif

1280 ms

logo.png

logo.png

1047 ms

btn_login.gif

btn_login.gif

827 ms

btn_reg.gif

btn_reg.gif

840 ms

bn15020601.gif

bn15020601.gif

1394 ms

160405_e_banner_g.jpg

160405_e_banner_g.jpg

2130 ms

20160120_sdlpbanner.gif

20160120_sdlpbanner.gif

1820 ms

160404_e_banner.jpg

160404_e_banner.jpg

2236 ms

20151229_5year.jpg

20151229_5year.jpg

20222 ms

main_bn15021105.gif

main_bn15021105.gif

1561 ms

main_bn15021101.gif

main_bn15021101.gif

1656 ms

main_bn15021102.gif

main_bn15021102.gif

1813 ms

main_h1_02.gif

main_h1_02.gif

1966 ms

main_b202140221_t02.gif

main_b202140221_t02.gif

4207 ms

main_b15011301_03.gif

main_b15011301_03.gif

3956 ms

main_h1_03.gif

main_h1_03.gif

2261 ms

160404_e_banner_m.png

160404_e_banner_m.png

2547 ms

main_h1_04.gif

main_h1_04.gif

4096 ms

main_b30301.gif

main_b30301.gif

2540 ms

main_b30302.gif

main_b30302.gif

2805 ms

main_b30303.gif

main_b30303.gif

2760 ms

main_bn140128.gif

main_bn140128.gif

2973 ms

rightmid_141113.gif

rightmid_141113.gif

3071 ms

main_h1_05.gif

main_h1_05.gif

3194 ms

main_h1_07.gif

main_h1_07.gif

3336 ms

u_box_tit.gif

u_box_tit.gif

3394 ms

u_box_btn01.gif

u_box_btn01.gif

3593 ms

u_box_btn02.gif

u_box_btn02.gif

3608 ms

u_box_btn03.gif

u_box_btn03.gif

3852 ms

u_box_tit02.gif

u_box_tit02.gif

3815 ms

main_t_pic1305_01.gif

main_t_pic1305_01.gif

4058 ms

20140221_05.gif

20140221_05.gif

4106 ms

main_t14071001.gif

main_t14071001.gif

4679 ms

main_t_pic1305_06.gif

main_t_pic1305_06.gif

4277 ms

main_t14071002.gif

main_t14071002.gif

4810 ms

main2013_board.asp

main2013_board.asp

746 ms

main2013_board.asp

main2013_board.asp

730 ms

bu_bar.gif

bu_bar.gif

406 ms

trs_esc.js

trs_esc.js

728 ms

main_t_pic1305_03.gif

main_t_pic1305_03.gif

3607 ms

main_t_pic1305_05.gif

main_t_pic1305_05.gif

3633 ms

main_t_pic1305_04.gif

main_t_pic1305_04.gif

3682 ms

log.php

log.php

190 ms

acecounter_V70.js

acecounter_V70.js

251 ms

main_h1_09.gif

main_h1_09.gif

3606 ms

analytics.js

analytics.js

57 ms

weblog.d-purple.co.kr

weblog.d-purple.co.kr

1913 ms

102 ms

collect

collect

19 ms

un_quick_btn01.gif

un_quick_btn01.gif

3417 ms

collect

collect

95 ms

81 ms

un_quick_btn02.gif

un_quick_btn02.gif

3342 ms

un_quick_btn03.gif

un_quick_btn03.gif

3350 ms

un_quick_btn04.gif

un_quick_btn04.gif

3275 ms

un_quick_btn05.gif

un_quick_btn05.gif

3128 ms

main_h1_11.gif

main_h1_11.gif

3121 ms

u_partner_btn151228.jpg

u_partner_btn151228.jpg

5448 ms

main_h1_06.gif

main_h1_06.gif

3059 ms

main_h1_08.gif

main_h1_08.gif

2941 ms

main_h1_10.gif

main_h1_10.gif

2876 ms

u_aside_banner_140428.gif

u_aside_banner_140428.gif

2894 ms

main_h1_12.gif

main_h1_12.gif

2843 ms

201602012_ex)Re.jpg

201602012_ex)Re.jpg

2900 ms

footer_logo.gif

footer_logo.gif

2633 ms

1606405_exam_sider.jpg

1606405_exam_sider.jpg

2664 ms

sdlp_side@@.jpg

sdlp_side@@.jpg

2856 ms

%EC%97%B0%EA%B0%84%ED%8C%A8%ED%82%A4%EC%A7%80_side%EB%B0%B0%EB%84%88.jpg

%EC%97%B0%EA%B0%84%ED%8C%A8%ED%82%A4%EC%A7%80_side%EB%B0%B0%EB%84%88.jpg

2765 ms

160328_3_29_side.gif

160328_3_29_side.gif

2520 ms

160330_pt_side.jpg

160330_pt_side.jpg

2753 ms

layer131220_tit01.gif

layer131220_tit01.gif

2462 ms

layer131220_close.jpg

layer131220_close.jpg

2554 ms

layer131220_tit02.gif

layer131220_tit02.gif

2381 ms

bg_lnb_menu150818.gif

bg_lnb_menu150818.gif

2417 ms

main_b202_tbar.gif

main_b202_tbar.gif

2442 ms

main_exbg01.gif

main_exbg01.gif

2338 ms

bu_list1.gif

bu_list1.gif

2371 ms

tab_menu.gif

tab_menu.gif

2351 ms

bg_tab2_on.gif

bg_tab2_on.gif

2427 ms

bg_tab2_off.gif

bg_tab2_off.gif

2352 ms

main_b14110502.gif

main_b14110502.gif

2327 ms

main_b14110503.gif

main_b14110503.gif

2231 ms

Accessibility Review

jongroeclass.co.kr accessibility score

53

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[accesskey] values are not unique

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

jongroeclass.co.kr best practices score

75

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

SEO Factors

jongroeclass.co.kr SEO score

54

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

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    KO

  • Language Claimed

    N/A

  • Encoding

    EUC-KR

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jongroeclass.co.kr can be misinterpreted by Google and other search engines. Our service has detected that Korean 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 Jongroeclass.co.kr main page’s claimed encoding is euc-kr. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

jongroeclass.co.kr

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