Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

datascientist.or.jp

トップ|一般社団法人データサイエンティスト協会

Page Load Speed

6.2 sec in total

First Response

564 ms

Resources Loaded

5.3 sec

Page Rendered

390 ms

datascientist.or.jp screenshot

About Website

Visit datascientist.or.jp now to see the best up-to-date Datascientist content for Japan and also check out these interesting facts you probably never knew about datascientist.or.jp

一般社団法人データサイエンティスト協会はデータサイエンスにおける最新のトレンドや技術についての情報提供、教育プログラム、ワークショップ、コンファレンスなどの活動を通じて、データサイエンティストのコミュニティを支援しています。

Visit datascientist.or.jp

Key Findings

We analyzed Datascientist.or.jp page load time and found that the first response time was 564 ms and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

datascientist.or.jp performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value10.8 s

0/100

25%

SI (Speed Index)

Value12.6 s

3/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

datascientist.or.jp

564 ms

www.datascientist.or.jp

888 ms

reset.css

337 ms

base.css

357 ms

jquery.js

365 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 44% of them (33 requests) were addressed to the original Datascientist.or.jp, 25% (19 requests) were made to Static.xx.fbcdn.net and 5% (4 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Datascientist.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 132.5 kB (29%)

Content Size

452.4 kB

After Optimization

319.9 kB

In fact, the total size of Datascientist.or.jp main page is 452.4 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. 60% of websites need less resources to load. Images take 268.0 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 10.2 kB

  • Original 14.8 kB
  • After minification 13.8 kB
  • After compression 4.6 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 10.2 kB or 69% of the original size.

Image Optimization

-8%

Potential reduce by 21.8 kB

  • Original 268.0 kB
  • After minification 246.2 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. Datascientist images are well optimized though.

JavaScript Optimization

-58%

Potential reduce by 90.5 kB

  • Original 156.8 kB
  • After minification 154.5 kB
  • After compression 66.3 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 90.5 kB or 58% of the original size.

CSS Optimization

-78%

Potential reduce by 10.0 kB

  • Original 12.9 kB
  • After minification 10.2 kB
  • After compression 2.9 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. Datascientist.or.jp needs all CSS files to be minified and compressed as it can save up to 10.0 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (54%)

Requests Now

59

After Optimization

27

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Datascientist. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

datascientist.or.jp accessibility score

64

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

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

datascientist.or.jp best practices score

67

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

High

Browser errors were logged to the console

SEO Factors

datascientist.or.jp SEO score

100

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

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Datascientist.or.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese 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 Datascientist.or.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

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