Tools & Wizards About Us
nineschool.co.kr screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

nineschool.co.kr

::::: 나인스쿨 - 라이브 강좌의 최강자 :::::

Page Load Speed

4.1 sec in total

First Response

782 ms

Resources Loaded

3.2 sec

Page Rendered

144 ms

nineschool.co.kr screenshot

About Website

Click here to check amazing Nineschool content for South Korea. Otherwise, check out these important facts you probably never knew about nineschool.co.kr

라이브 강좌의 최강자-나인스쿨

Visit nineschool.co.kr

Key Findings

We analyzed Nineschool.co.kr page load time and found that the first response time was 782 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

nineschool.co.kr performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value6.4 s

41/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value4.4 s

84/100

10%

Network Requests Diagram

nineschool.co.kr

782 ms

jquery-1.9.0.min.js

587 ms

Common.js

392 ms

intro.css

393 ms

logo.png

393 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that all of those requests were addressed to Nineschool.co.kr and no external sources were called. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Nineschool.co.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 25.8 kB (1%)

Content Size

2.4 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nineschool.co.kr 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. 20% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 3.1 kB

  • Original 4.7 kB
  • After minification 4.3 kB
  • After compression 1.6 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 3.1 kB or 66% of the original size.

Image Optimization

-1%

Potential reduce by 21.4 kB

  • Original 2.3 MB
  • After minification 2.3 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. Nineschool images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 1.1 kB

  • Original 36.2 kB
  • After minification 36.2 kB
  • After compression 35.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-14%

Potential reduce by 182 B

  • Original 1.3 kB
  • After minification 1.3 kB
  • After compression 1.1 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. Nineschool.co.kr needs all CSS files to be minified and compressed as it can save up to 182 B or 14% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

18

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nineschool. According to our analytics all requests are already optimized.

Network Requests Diagram

nineschool.co.kr

nineschool.co.kr

782 ms

jquery-1.9.0.min.js

jquery-1.9.0.min.js

587 ms

Common.js

Common.js

392 ms

intro.css

intro.css

393 ms

logo.png

logo.png

393 ms

tel03.gif

tel03.gif

394 ms

remote.gif

remote.gif

394 ms

object01.jpg

object01.jpg

1758 ms

object02.jpg

object02.jpg

1759 ms

object03.jpg

object03.jpg

1805 ms

btn_personal.png

btn_personal.png

596 ms

bg.png

bg.png

197 ms

vmenu01_off.png

vmenu01_off.png

198 ms

vmenu02_off.png

vmenu02_off.png

199 ms

vmenu03_off.png

vmenu03_off.png

384 ms

bg01.jpg

bg01.jpg

1569 ms

bg02.jpg

bg02.jpg

1764 ms

bg03.jpg

bg03.jpg

1363 ms

bottom.png

bottom.png

1351 ms

Accessibility Review

nineschool.co.kr accessibility score

74

Accessibility Issues

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

Links do not have a discernible name

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

nineschool.co.kr 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

nineschool.co.kr SEO score

83

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

Language and Encoding

  • Language Detected

    KO

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

nineschool.co.kr

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