Tools & Wizards About Us
coresec.co.kr screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

coresec.co.kr

coresec

Page Load Speed

9.6 sec in total

First Response

1.7 sec

Resources Loaded

7.8 sec

Page Rendered

146 ms

coresec.co.kr screenshot

About Website

Welcome to coresec.co.kr homepage info - get ready to check Coresec best content right away, or after learning these important things about coresec.co.kr

실전형 사이버보안 교육훈련시스템,실시간 공격방어훈련,침해사고 대응 훈련서비스, 인력채용 역량평가 서비스, MITRE ATT&CK; 레드팀서비스,체이널리시스,chainalysis,가상자산,비트코인

Visit coresec.co.kr

Key Findings

We analyzed Coresec.co.kr page load time and found that the first response time was 1.7 sec and then it took 8 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

coresec.co.kr performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value56.0 s

0/100

25%

SI (Speed Index)

Value23.3 s

0/100

10%

TBT (Total Blocking Time)

Value4,260 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.1

90/100

15%

TTI (Time to Interactive)

Value30.1 s

0/100

10%

Network Requests Diagram

coresec.co.kr

1652 ms

style.css

596 ms

bo.css

806 ms

jquery.min.js

1489 ms

popup.js

407 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 98% of them (52 requests) were addressed to the original Coresec.co.kr, 2% (1 request) were made to Mu3.nayana.kr. The less responsive or slowest element that took the longest time to load (4.2 sec) belongs to the original domain Coresec.co.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 168.2 kB (17%)

Content Size

986.8 kB

After Optimization

818.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Coresec.co.kr main page is 986.8 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. 15% of websites need less resources to load. Images take 797.5 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 11.6 kB

  • Original 15.1 kB
  • After minification 14.5 kB
  • After compression 3.5 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. 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 11.6 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 33.1 kB

  • Original 797.5 kB
  • After minification 764.5 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. Coresec images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 105.9 kB

  • Original 151.7 kB
  • After minification 140.8 kB
  • After compression 45.7 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 105.9 kB or 70% of the original size.

CSS Optimization

-79%

Potential reduce by 17.6 kB

  • Original 22.5 kB
  • After minification 19.4 kB
  • After compression 4.8 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. Coresec.co.kr needs all CSS files to be minified and compressed as it can save up to 17.6 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (12%)

Requests Now

51

After Optimization

45

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Coresec. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

coresec.co.kr

coresec.co.kr

1652 ms

style.css

style.css

596 ms

bo.css

bo.css

806 ms

jquery.min.js

jquery.min.js

1489 ms

popup.js

popup.js

407 ms

flash.js

flash.js

413 ms

java.js

java.js

792 ms

calendar.js

calendar.js

1213 ms

slides.min.jquery.js

slides.min.jquery.js

1011 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

1383 ms

jquery.bxslider.css

jquery.bxslider.css

1190 ms

quick_1.gif

quick_1.gif

396 ms

quick_2.gif

quick_2.gif

402 ms

quick_3.gif

quick_3.gif

401 ms

quick_4.gif

quick_4.gif

403 ms

quick_5.gif

quick_5.gif

406 ms

logo.gif

logo.gif

415 ms

top_home.gif

top_home.gif

789 ms

top_contact.gif

top_contact.gif

795 ms

top_sitemap.gif

top_sitemap.gif

799 ms

menu_1.gif

menu_1.gif

800 ms

menu_2.gif

menu_2.gif

804 ms

menu_3.gif

menu_3.gif

806 ms

menu_4.gif

menu_4.gif

1180 ms

menu_5.gif

menu_5.gif

1189 ms

visual_1.jpg

visual_1.jpg

2815 ms

visual_2.jpg

visual_2.jpg

2762 ms

visual_3.jpg

visual_3.jpg

2236 ms

visual_4.jpg

visual_4.jpg

2237 ms

visual_5.jpg

visual_5.jpg

2765 ms

e1.gif

e1.gif

1800 ms

e2.gif

e2.gif

2197 ms

e3_dot.gif

e3_dot.gif

2593 ms

e3.gif

e3.gif

2636 ms

ban_title.jpg

ban_title.jpg

2635 ms

532e73d27971c.jpg

532e73d27971c.jpg

3579 ms

555d5626414cb.jpg

555d5626414cb.jpg

3443 ms

532e753d6c6e6.jpg

532e753d6c6e6.jpg

3440 ms

532e76e4e9662.jpg

532e76e4e9662.jpg

3558 ms

532e9d1896a8d.jpg

532e9d1896a8d.jpg

3565 ms

foot_1.gif

foot_1.gif

3209 ms

foot_2.gif

foot_2.gif

3608 ms

foot_3.gif

foot_3.gif

3837 ms

foot_4.gif

foot_4.gif

3857 ms

foot_5.gif

foot_5.gif

3951 ms

foot_6.gif

foot_6.gif

3962 ms

foot_7.gif

foot_7.gif

3948 ms

NanumGothic.woff

NanumGothic.woff

3631 ms

foot_8.gif

foot_8.gif

3852 ms

foot_9.gif

foot_9.gif

3864 ms

copy.gif

copy.gif

4167 ms

bx_loader.gif

bx_loader.gif

3964 ms

error_404.html

error_404.html

668 ms

Accessibility Review

coresec.co.kr accessibility score

84

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

coresec.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

High

Missing source maps for large first-party JavaScript

SEO Factors

coresec.co.kr SEO score

88

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

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

    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 Coresec.co.kr 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 Coresec.co.kr 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

coresec.co.kr

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