Tools & Wizards About Us
katogroup.riken.jp screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

katogroup.riken.jp

Kato Group, Nanoscale Quantum Photonics Laboratory, RIKEN

Page Load Speed

2.2 sec in total

First Response

566 ms

Resources Loaded

1.2 sec

Page Rendered

362 ms

katogroup.riken.jp screenshot

About Website

Welcome to katogroup.riken.jp homepage info - get ready to check Kato Group RIKEN best content for China right away, or after learning these important things about katogroup.riken.jp

Kato Group, Nanoscale Quantum Photonics Laboratory, RIKEN. Carbon nanotube photonics and optoelectronics.

Visit katogroup.riken.jp

Key Findings

We analyzed Katogroup.riken.jp page load time and found that the first response time was 566 ms and then it took 1.6 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

katogroup.riken.jp performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

93/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

28/100

25%

SI (Speed Index)

Value2.1 s

99/100

10%

TBT (Total Blocking Time)

Value320 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.8 s

78/100

10%

Network Requests Diagram

katogroup.riken.jp

566 ms

styles.css

168 ms

common.js

321 ms

google-analytics.js

337 ms

analytics.js

251 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 83% of them (5 requests) were addressed to the original Katogroup.riken.jp, 17% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (566 ms) belongs to the original domain Katogroup.riken.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 10.5 kB (30%)

Content Size

34.8 kB

After Optimization

24.3 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Katogroup.riken.jp main page is 34.8 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. Only 10% of websites need less resources to load. Javascripts take 21.6 kB which makes up the majority of the site volume.

HTML Optimization

-60%

Potential reduce by 1.5 kB

  • Original 2.5 kB
  • After minification 2.4 kB
  • After compression 1.0 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 1.5 kB or 60% of the original size.

JavaScript Optimization

-1%

Potential reduce by 253 B

  • Original 21.6 kB
  • After minification 21.5 kB
  • After compression 21.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-82%

Potential reduce by 8.7 kB

  • Original 10.7 kB
  • After minification 6.9 kB
  • After compression 2.0 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. Katogroup.riken.jp needs all CSS files to be minified and compressed as it can save up to 8.7 kB or 82% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • Images
  • JavaScript
  • CSS

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kato Group RIKEN. According to our analytics all requests are already optimized.

Network Requests Diagram

katogroup.riken.jp

katogroup.riken.jp

566 ms

styles.css

styles.css

168 ms

common.js

common.js

321 ms

google-analytics.js

google-analytics.js

337 ms

analytics.js

analytics.js

251 ms

iconrightarrow.gif

iconrightarrow.gif

239 ms

Accessibility Review

katogroup.riken.jp accessibility score

100

Accessibility Issues

Best Practices

katogroup.riken.jp 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

katogroup.riken.jp SEO score

89

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Katogroup.riken.jp 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 Katogroup.riken.jp 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

katogroup.riken.jp

Open Graph description is not detected on the main page of Kato Group RIKEN. 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: