Tools & Wizards About Us
clex.co.kr screenshot

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

clex.co.kr

Optical Lens, Ophthalmic Lens, Plastic Lens, Progressive Lens, Semi Finished Lens, RX Lens, Freeform Lens manufacturer | Clex

Page Load Speed

2.9 sec in total

First Response

810 ms

Resources Loaded

2 sec

Page Rendered

83 ms

clex.co.kr screenshot

About Website

Click here to check amazing Clex content. Otherwise, check out these important facts you probably never knew about clex.co.kr

Clex manufactures high quality lenses and they deliver all-around comfort to your eyes. Clex eyeglass lenses will always give you a clear and refreshing view.

Visit clex.co.kr

Key Findings

We analyzed Clex.co.kr page load time and found that the first response time was 810 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

clex.co.kr performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

92/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

21/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value490 ms

59/100

30%

CLS (Cumulative Layout Shift)

Value0.093

91/100

15%

TTI (Time to Interactive)

Value4.9 s

77/100

10%

Network Requests Diagram

clex.co.kr

810 ms

style.css

194 ms

main.js

386 ms

analytics.js

17 ms

ci.gif

193 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 71% of them (20 requests) were addressed to the original Clex.co.kr, 14% (4 requests) were made to Google-analytics.com and 11% (3 requests) were made to 0. The less responsive or slowest element that took the longest time to load (810 ms) belongs to the original domain Clex.co.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 12.0 kB (14%)

Content Size

87.8 kB

After Optimization

75.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Clex.co.kr main page is 87.8 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. Javascripts take 39.4 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 7.8 kB

  • Original 10.0 kB
  • After minification 8.2 kB
  • After compression 2.2 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 1.8 kB, which is 18% 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 7.8 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 45 B

  • Original 34.2 kB
  • After minification 34.1 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. Clex images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 816 B

  • Original 39.4 kB
  • After minification 39.3 kB
  • After compression 38.6 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

-80%

Potential reduce by 3.4 kB

  • Original 4.2 kB
  • After minification 3.5 kB
  • After compression 827 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. Clex.co.kr needs all CSS files to be minified and compressed as it can save up to 3.4 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (46%)

Requests Now

24

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clex. 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

clex.co.kr

clex.co.kr

810 ms

style.css

style.css

194 ms

main.js

main.js

386 ms

analytics.js

analytics.js

17 ms

ci.gif

ci.gif

193 ms

menu_01.gif

menu_01.gif

197 ms

menu_02.gif

menu_02.gif

386 ms

menu_03.gif

menu_03.gif

387 ms

menu_04.gif

menu_04.gif

393 ms

main_bg.jpg

main_bg.jpg

393 ms

main_visual.jpg

main_visual.jpg

587 ms

visual_shadow.gif

visual_shadow.gif

394 ms

copyright.gif

copyright.gif

578 ms

today.gif

today.gif

578 ms

total.gif

total.gif

588 ms

ga.js

ga.js

15 ms

collect

collect

45 ms

__utm.gif

__utm.gif

13 ms

js

js

59 ms

menu_01_over.gif

menu_01_over.gif

5 ms

menu_01_over.gif

menu_01_over.gif

194 ms

menu_02_over.gif

menu_02_over.gif

198 ms

menu_03_over.gif

menu_03_over.gif

193 ms

sub_mn_01_over.gif

sub_mn_01_over.gif

198 ms

sub_mn_02_over.gif

sub_mn_02_over.gif

198 ms

btn_korean_over.gif

btn_korean_over.gif

198 ms

menu_02_over.gif

menu_02_over.gif

3 ms

menu_03_over.gif

menu_03_over.gif

3 ms

Accessibility Review

clex.co.kr accessibility score

53

Accessibility Issues

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.

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

clex.co.kr best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

clex.co.kr SEO score

67

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Clex.co.kr can be misinterpreted by Google and other search engines. Our service has detected that English 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 Clex.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

clex.co.kr

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