Tools & Wizards About Us
cesa.or.jp screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

cesa.or.jp

CESA：一般社団法人コンピュータエンターテインメント協会

Page Load Speed

8.2 sec in total

First Response

985 ms

Resources Loaded

6.9 sec

Page Rendered

276 ms

cesa.or.jp screenshot

About Website

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

健全にゲームを遊ぶための研究・啓発活動、各種ガイドラインの策定、ゲーム白書の発刊などを行い、東京ゲームショウや開発者会議などを開催し、業界全体で様々な活動に取り組んでいます。

Visit cesa.or.jp

Key Findings

We analyzed Cesa.or.jp page load time and found that the first response time was 985 ms and then it took 7.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

cesa.or.jp performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value14.7 s

0/100

25%

SI (Speed Index)

Value10.1 s

9/100

10%

TBT (Total Blocking Time)

Value340 ms

74/100

30%

CLS (Cumulative Layout Shift)

Value0.929

3/100

15%

TTI (Time to Interactive)

Value7.2 s

50/100

10%

Network Requests Diagram

cesa.or.jp

985 ms

gtm.js

68 ms

style.css

1708 ms

lightbox.css

1348 ms

jquery.min.js

31 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 76% of them (42 requests) were addressed to the original Cesa.or.jp, 9% (5 requests) were made to Google.com and 4% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain Cesa.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.9 MB (45%)

Content Size

4.3 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cesa.or.jp main page is 4.3 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. 40% of websites need less resources to load. Images take 3.8 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 22.0 kB

  • Original 29.0 kB
  • After minification 27.1 kB
  • After compression 7.0 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 22.0 kB or 76% of the original size.

Image Optimization

-45%

Potential reduce by 1.7 MB

  • Original 3.8 MB
  • After minification 2.1 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. Obviously, CESA needs image optimization as it can save up to 1.7 MB or 45% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-23%

Potential reduce by 70.4 kB

  • Original 307.7 kB
  • After minification 293.9 kB
  • After compression 237.3 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 70.4 kB or 23% of the original size.

CSS Optimization

-76%

Potential reduce by 68.9 kB

  • Original 90.7 kB
  • After minification 77.5 kB
  • After compression 21.7 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. Cesa.or.jp needs all CSS files to be minified and compressed as it can save up to 68.9 kB or 76% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (33%)

Requests Now

54

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CESA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cesa.or.jp

cesa.or.jp

985 ms

gtm.js

gtm.js

68 ms

style.css

style.css

1708 ms

lightbox.css

lightbox.css

1348 ms

jquery.min.js

jquery.min.js

31 ms

ofi.min.js

ofi.min.js

1361 ms

analytics.js

analytics.js

27 ms

collect

collect

20 ms

collect

collect

35 ms

js

js

64 ms

slick.css

slick.css

188 ms

slick-theme.css

slick-theme.css

373 ms

slick.min.js

slick.min.js

930 ms

script.js

script.js

1364 ms

lightbox.js

lightbox.js

1179 ms

sp.css

sp.css

383 ms

pc.css

pc.css

374 ms

clearfix.css

clearfix.css

189 ms

slide_gameawards2024.png

slide_gameawards2024.png

3959 ms

close.png

close.png

193 ms

loading.gif

loading.gif

189 ms

prev.png

prev.png

191 ms

next.png

next.png

190 ms

logo.png

logo.png

191 ms

arrow.png

arrow.png

375 ms

slide_tgs2024.png

slide_tgs2024.png

747 ms

banner_cedec2024_1000_300.jpg

banner_cedec2024_1000_300.jpg

1365 ms

banner4.jpg

banner4.jpg

1094 ms

banner_howto.png

banner_howto.png

2082 ms

banner_taiken.png

banner_taiken.png

2160 ms

banner_survey.png

banner_survey.png

2050 ms

banner_interview.png

banner_interview.png

2194 ms

banner_guideline.png

banner_guideline.png

1946 ms

banner_admission.png

banner_admission.png

2707 ms

keizai_banner_111012.jpg

keizai_banner_111012.jpg

2237 ms

soudan_img_02.png

soudan_img_02.png

2269 ms

cse.js

cse.js

65 ms

circlearrow.png

circlearrow.png

359 ms

arrow_blue.png

arrow_blue.png

361 ms

icon_pdf.png

icon_pdf.png

360 ms

pagetop.png

pagetop.png

365 ms

cse_element__ja.js

cse_element__ja.js

22 ms

default+ja.css

default+ja.css

67 ms

default.css

default.css

69 ms

async-ads.js

async-ads.js

26 ms

branding.png

branding.png

29 ms

clear.png

clear.png

21 ms

arrow2.png

arrow2.png

193 ms

slide_arrow_l_m.png

slide_arrow_l_m.png

190 ms

slide_arrow_r_m.png

slide_arrow_r_m.png

192 ms

toparrow.png

toparrow.png

191 ms

slidethum_gameawards2023.jpg

slidethum_gameawards2023.jpg

190 ms

slidethum_tgs2024.png

slidethum_tgs2024.png

188 ms

banner_cedec2024_thumb.jpg

banner_cedec2024_thumb.jpg

192 ms

thumb_banner4.png

thumb_banner4.png

195 ms

Accessibility Review

cesa.or.jp accessibility score

88

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

cesa.or.jp 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

High

Page has valid source maps

SEO Factors

cesa.or.jp SEO score

76

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

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

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

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

cesa.or.jp

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