Access duo.co.kr. 듀오 한국대표 결혼정보회사 1577-8333

duo.co.kr screenshot

1

Performance

Renders faster than
19% of other websites
74

Accessibility

Visual factors better than
that of 41% of websites
67

Best Practices

More advanced features
available than in
24% of websites
84

SEO

Google-friendlier than
53% of websites

First Response

766 ms

Resources Loaded

18.4 sec

Page Rendered

634 ms

duo.co.kr screenshot

About Website

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

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Key Findings

We analyzed Duo.co.kr page load time and found that the first response time was 766 ms and then it took 19.1 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value9.1 s

0/100

10%

LCP (Largest Contentful Paint)

Value20.6 s

0/100

25%

SI (Speed Index)

Value19.1 s

0/100

10%

TBT (Total Blocking Time)

Value2,910 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value1.228

1/100

15%

TTI (Time to Interactive)

Value23.3 s

1/100

10%

duo.co.kr

766 ms

www.duo.co.kr

2736 ms

duo_index.css

1468 ms

jquery-1.11.0.min.js

1881 ms

isValidType.js

1629 ms

Our browser made a total of 211 requests to load all elements on the main page. We found that 97% of them (204 requests) were addressed to the original Duo.co.kr, 2% (5 requests) were made to Common.duo.co.kr and 1% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (4.4 sec) belongs to the original domain Duo.co.kr.

Content Size

4.2 MB

After Optimization

3.7 MB

In fact, the total size of Duo.co.kr main page is 4.2 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. 55% of websites need less resources to load. Images take 3.8 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 132.3 kB

Original 152.3 kB
After minification 126.8 kB
After compression 19.9 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 25.4 kB, which is 17% 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 132.3 kB or 87% of the original size.

Image Optimization

-6%

Potential reduce by 207.9 kB

Original 3.8 MB
After minification 3.6 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. Duo images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 133.0 kB

Original 197.3 kB
After minification 176.1 kB
After compression 64.3 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 133.0 kB or 67% of the original size.

CSS Optimization

-87%

Potential reduce by 53.0 kB

Original 61.2 kB
After minification 51.2 kB
After compression 8.2 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. Duo.co.kr needs all CSS files to be minified and compressed as it can save up to 53.0 kB or 87% of the original size.

Requests Now

209

After Optimization

196

The browser has sent 209 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

KO
Language Claimed

N/A
Encoding

EUC-KR

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

duo.co.kr

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