Tools & Wizards About Us
zkorean.com screenshot

Report Summary

  • 90

    Performance

    Renders faster than
    91% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

zkorean.com

zKorean - Learn the Korean Alphabet, Grammar, Vocabulary & Culture

Page Load Speed

493 ms in total

First Response

9 ms

Resources Loaded

262 ms

Page Rendered

222 ms

zkorean.com screenshot

About Website

Click here to check amazing ZKorean content for United States. Otherwise, check out these important facts you probably never knew about zkorean.com

Learn Korean with our intro to Korean characters (Hangul), free Korean-English & English-Korean dictionary, Korean grammar lessons, and vocabulary lists.

Visit zkorean.com

Key Findings

We analyzed Zkorean.com page load time and found that the first response time was 9 ms and then it took 484 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

zkorean.com performance score

90

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

84/100

25%

SI (Speed Index)

Value2.2 s

99/100

10%

TBT (Total Blocking Time)

Value180 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.0 s

87/100

10%

Network Requests Diagram

zkorean.com

9 ms

zkorean.com

39 ms

zkorean.css

8 ms

font-awesome.min.css

59 ms

audioflashcards_20100502.png

43 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 47% of them (7 requests) were addressed to the original Zkorean.com, 33% (5 requests) were made to D2udmszyhhvr5o.cloudfront.net and 13% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (130 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 41.5 kB (14%)

Content Size

291.5 kB

After Optimization

250.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zkorean.com main page is 291.5 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. 40% of websites need less resources to load. Images take 203.0 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 19.0 kB

  • Original 23.2 kB
  • After minification 17.0 kB
  • After compression 4.2 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 6.2 kB, which is 27% 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 19.0 kB or 82% of the original size.

Image Optimization

-11%

Potential reduce by 22.4 kB

  • Original 203.0 kB
  • After minification 180.6 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. Obviously, ZKorean needs image optimization as it can save up to 22.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 43.7 kB
  • After minification 43.7 kB
  • After compression 43.7 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

-0%

Potential reduce by 32 B

  • Original 21.6 kB
  • After minification 21.6 kB
  • After compression 21.6 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. Zkorean.com has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

12

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZKorean. According to our analytics all requests are already optimized.

Network Requests Diagram

zkorean.com

zkorean.com

9 ms

zkorean.com

zkorean.com

39 ms

zkorean.css

zkorean.css

8 ms

font-awesome.min.css

font-awesome.min.css

59 ms

audioflashcards_20100502.png

audioflashcards_20100502.png

43 ms

js

js

130 ms

jquery.1.12.4.js

jquery.1.12.4.js

31 ms

bootstrap.js

bootstrap.js

38 ms

logo-header.png

logo-header.png

37 ms

dictionary.png

dictionary.png

39 ms

transhelper_20100502.png

transhelper_20100502.png

44 ms

koreanflashcards_20100502.png

koreanflashcards_20100502.png

43 ms

romanizer_20100502.png

romanizer_20100502.png

45 ms

keyboard_20100502.png

keyboard_20100502.png

42 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

35 ms

Accessibility Review

zkorean.com accessibility score

87

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

zkorean.com best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zkorean.com SEO score

88

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zkorean.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Zkorean.com 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

zkorean.com

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