Tools & Wizards About Us
kdb.snu.ac.kr screenshot

Report Summary

  • 74

    Performance

    Renders faster than
    83% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

kdb.snu.ac.kr

PIDL (Petabyte-scale In-memory Database Lab) | Seoul National University Research Group

Page Load Speed

2.9 sec in total

First Response

886 ms

Resources Loaded

1.8 sec

Page Rendered

120 ms

kdb.snu.ac.kr screenshot

About Website

Visit kdb.snu.ac.kr now to see the best up-to-date Kdb Snu Ac content and also check out these interesting facts you probably never knew about kdb.snu.ac.kr

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Key Findings

We analyzed Kdb.snu.ac.kr page load time and found that the first response time was 886 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

kdb.snu.ac.kr performance score

74

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

39/100

25%

SI (Speed Index)

Value7.2 s

29/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.068

96/100

15%

TTI (Time to Interactive)

Value2.5 s

98/100

10%

Network Requests Diagram

kdb.snu.ac.kr

886 ms

style.css

216 ms

style.css

424 ms

jquery.js

909 ms

jquery-migrate.min.js

468 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 Kdb.snu.ac.kr and no external sources were called. The less responsive or slowest element that took the longest time to load (909 ms) belongs to the original domain Kdb.snu.ac.kr.

Page Optimization Overview & Recommendations

Page size can be reduced by 108.5 kB (70%)

Content Size

155.7 kB

After Optimization

47.2 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Kdb.snu.ac.kr main page is 155.7 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Javascripts take 104.5 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 6.1 kB

  • Original 9.4 kB
  • After minification 9.0 kB
  • After compression 3.4 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. 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 6.1 kB or 64% of the original size.

JavaScript Optimization

-65%

Potential reduce by 67.5 kB

  • Original 104.5 kB
  • After minification 104.0 kB
  • After compression 37.0 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 67.5 kB or 65% of the original size.

CSS Optimization

-84%

Potential reduce by 34.9 kB

  • Original 41.8 kB
  • After minification 32.0 kB
  • After compression 6.9 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. Kdb.snu.ac.kr needs all CSS files to be minified and compressed as it can save up to 34.9 kB or 84% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

  • JavaScript
  • CSS

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kdb Snu Ac. According to our analytics all requests are already optimized.

Network Requests Diagram

kdb.snu.ac.kr

kdb.snu.ac.kr

886 ms

style.css

style.css

216 ms

style.css

style.css

424 ms

jquery.js

jquery.js

909 ms

jquery-migrate.min.js

jquery-migrate.min.js

468 ms

navigation.js

navigation.js

516 ms

easy-table.css

easy-table.css

209 ms

Accessibility Review

kdb.snu.ac.kr accessibility score

94

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

Links do not have a discernible name

Best Practices

kdb.snu.ac.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

kdb.snu.ac.kr SEO score

90

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

    EN

  • Language Claimed

    KO

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kdb.snu.ac.kr can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Korean language. Our system also found out that Kdb.snu.ac.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

kdb.snu.ac.kr

Open Graph description is not detected on the main page of Kdb Snu Ac. 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: