Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

Page Load Speed

1.7 sec in total

First Response

724 ms

Resources Loaded

959 ms

Page Rendered

0 ms

o2clinic.co.kr screenshot

About Website

Welcome to o2clinic.co.kr homepage info - get ready to check O 2 Clinic best content for South Korea right away, or after learning these important things about o2clinic.co.kr

Visit o2clinic.co.kr

Key Findings

We analyzed O2clinic.co.kr page load time and found that the first response time was 724 ms and then it took 959 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

o2clinic.co.kr performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.5 s

1/100

10%

LCP (Largest Contentful Paint)

Value11.0 s

0/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value1.105

1/100

15%

TTI (Time to Interactive)

Value9.0 s

33/100

10%

Network Requests Diagram

o2clinic.co.kr

724 ms

cupid.js

203 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that all of those requests were addressed to O2clinic.co.kr and no external sources were called. The less responsive or slowest element that took the longest time to load (724 ms) belongs to the original domain O2clinic.co.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 26.1 kB (82%)

Content Size

31.9 kB

After Optimization

5.8 kB

In fact, the total size of O2clinic.co.kr main page is 31.9 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 31.2 kB which makes up the majority of the site volume.

HTML Optimization

-34%

Potential reduce by 259 B

  • Original 773 B
  • After minification 773 B
  • After compression 514 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 259 B or 34% of the original size.

JavaScript Optimization

-83%

Potential reduce by 25.9 kB

  • Original 31.2 kB
  • After minification 16.7 kB
  • After compression 5.3 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 25.9 kB or 83% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

1

After Optimization

1

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of O 2 Clinic. According to our analytics all requests are already optimized.

Accessibility Review

o2clinic.co.kr accessibility score

79

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.

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

o2clinic.co.kr best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

o2clinic.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

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    KO

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise O2clinic.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 O2clinic.co.kr main page’s claimed encoding is . 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

Open Graph description is not detected on the main page of O 2 Clinic. 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: