Tools & Wizards About Us
tworld.co.kr screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

tworld.co.kr

메인 | T world

Page Load Speed

3.3 sec in total

First Response

729 ms

Resources Loaded

2.5 sec

Page Rendered

94 ms

tworld.co.kr screenshot

About Website

Visit tworld.co.kr now to see the best up-to-date T World content for South Korea and also check out these interesting facts you probably never knew about tworld.co.kr

SK텔레콤 공식 온라인 고객센터입니다. 데이터 선물하기, 모바일/유선 요금제 변경, 사용/청구요금 조회/납부, 분실 신고, 번호변경 등 다양한 서비스를 이용하실 수 있습니다.

Visit tworld.co.kr

Key Findings

We analyzed Tworld.co.kr page load time and found that the first response time was 729 ms and then it took 2.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

tworld.co.kr performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value14.9 s

0/100

25%

SI (Speed Index)

Value15.4 s

1/100

10%

TBT (Total Blocking Time)

Value3,300 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.374

28/100

15%

TTI (Time to Interactive)

Value11.5 s

18/100

10%

Network Requests Diagram

www.tworld.co.kr

729 ms

a.html

238 ms

index_psnl.html

475 ms

xmlHttp.js

244 ms

cookie_script.js

237 ms

Our browser made a total of 7 requests to load all elements on the main page. We found that all of those requests were addressed to Tworld.co.kr and no external sources were called. The less responsive or slowest element that took the longest time to load (729 ms) belongs to the original domain Tworld.co.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 222.7 kB (64%)

Content Size

348.9 kB

After Optimization

126.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tworld.co.kr main page is 348.9 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Javascripts take 309.4 kB which makes up the majority of the site volume.

HTML Optimization

-63%

Potential reduce by 1.4 kB

  • Original 2.2 kB
  • After minification 2.1 kB
  • After compression 828 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 1.4 kB or 63% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 35.0 kB
  • After minification 35.0 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. T World images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 219.5 kB

  • Original 309.4 kB
  • After minification 296.8 kB
  • After compression 89.8 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 219.5 kB or 71% of the original size.

CSS Optimization

-73%

Potential reduce by 1.7 kB

  • Original 2.3 kB
  • After minification 1.8 kB
  • After compression 628 B

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. Tworld.co.kr needs all CSS files to be minified and compressed as it can save up to 1.7 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (50%)

Requests Now

6

After Optimization

3

  • AJAX
  • JavaScript

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of T World. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.tworld.co.kr

www.tworld.co.kr

729 ms

a.html

a.html

238 ms

index_psnl.html

index_psnl.html

475 ms

xmlHttp.js

xmlHttp.js

244 ms

cookie_script.js

cookie_script.js

237 ms

login.js

login.js

516 ms

xtvid.js

xtvid.js

472 ms

Accessibility Review

tworld.co.kr accessibility score

86

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-hidden="true"] elements contain focusable descendents

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

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

tworld.co.kr best practices score

83

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

SEO Factors

tworld.co.kr SEO score

97

Search Engine Optimization Advices

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

    KO

  • Encoding

    EUC-KR

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tworld.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), while the claimed language is Korean. Our system also found out that Tworld.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

tworld.co.kr

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