Tools & Wizards About Us
judo-ch.jp screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

judo-ch.jp

【公式：柔道チャンネル】柔道情報の専門サイト／ホームメイト

Page Load Speed

20 sec in total

First Response

500 ms

Resources Loaded

18.3 sec

Page Rendered

1.2 sec

judo-ch.jp screenshot

About Website

Welcome to judo-ch.jp homepage info - get ready to check Judo Ch best content for Japan right away, or after learning these important things about judo-ch.jp

日本柔道を応援する東建コーポレーションが柔道に関する情報をご紹介。大会速報、選手紹介、柔道の歴史、豆知識など、柔道のポータルサイトとして発信中です。SNS（Facebook、X[エックス]、YouTube、Instagram）もチェック！

Visit judo-ch.jp

Key Findings

We analyzed Judo-ch.jp page load time and found that the first response time was 500 ms and then it took 19.5 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

judo-ch.jp performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value22.4 s

0/100

25%

SI (Speed Index)

Value15.1 s

1/100

10%

TBT (Total Blocking Time)

Value560 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0.221

56/100

15%

TTI (Time to Interactive)

Value54.4 s

0/100

10%

Network Requests Diagram

judo-ch.jp

500 ms

www.judo-ch.jp

973 ms

top.css

798 ms

top201408.css

419 ms

jquery.min.js

1028 ms

Our browser made a total of 270 requests to load all elements on the main page. We found that 80% of them (217 requests) were addressed to the original Judo-ch.jp, 7% (18 requests) were made to Token.co.jp and 3% (7 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (7.4 sec) belongs to the original domain Judo-ch.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 821.8 kB (12%)

Content Size

6.7 MB

After Optimization

5.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Judo-ch.jp main page is 6.7 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. 65% of websites need less resources to load. Images take 6.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 72.9 kB

  • Original 90.0 kB
  • After minification 66.9 kB
  • After compression 17.1 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 23.1 kB, which is 26% 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 72.9 kB or 81% of the original size.

Image Optimization

-6%

Potential reduce by 377.3 kB

  • Original 6.1 MB
  • After minification 5.7 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. Judo Ch images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 307.9 kB

  • Original 466.4 kB
  • After minification 458.6 kB
  • After compression 158.4 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 307.9 kB or 66% of the original size.

CSS Optimization

-86%

Potential reduce by 63.6 kB

  • Original 74.4 kB
  • After minification 47.2 kB
  • After compression 10.7 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. Judo-ch.jp needs all CSS files to be minified and compressed as it can save up to 63.6 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (19%)

Requests Now

268

After Optimization

218

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 268 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Judo Ch. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

judo-ch.jp

judo-ch.jp

500 ms

www.judo-ch.jp

www.judo-ch.jp

973 ms

top.css

top.css

798 ms

top201408.css

top201408.css

419 ms

jquery.min.js

jquery.min.js

1028 ms

dropdown.js

dropdown.js

427 ms

rollover.js

rollover.js

419 ms

top.js

top.js

598 ms

readanime.js

readanime.js

644 ms

widgets.js

widgets.js

6 ms

common.css

common.css

241 ms

header.css

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220 ms

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pubads_impl_81.js

pubads_impl_81.js

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main.jpg

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main.jpg

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811 ms

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1608 ms

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0.jpg

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72 ms

ads

ads

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6671631552252292210

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75 ms

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12 ms

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judo_mari.png

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3495 ms

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platform.js

135 ms

mark_mail_blue_speedup.png

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1459 ms

bn_newspaper.jpg

bn_newspaper.jpg

4972 ms

bnr_mailmagazine.jpg

bnr_mailmagazine.jpg

4224 ms

dc.js

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43 ms

button.831500944bc3eb7ea5276ccdc3f71d2e.js

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21 ms

like.php

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144 ms

tweet_button.6a78875565a912489e9aef879c881358.ja.html

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18 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

31 ms

cb=gapi.loaded_1

cb=gapi.loaded_1

45 ms

fastbutton

fastbutton

131 ms

7413 ms

postmessageRelay

postmessageRelay

44 ms

-1cfYrhulAt.js

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481 ms

LVx-xkvaJ0b.png

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jot

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99 ms

api.js

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41 ms

core:rpc:shindig.random:shindig.sha1.js

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cb=gapi.loaded_0

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top_introduce.asp

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3345 ms

activeview

activeview

12 ms

bnr_judo_hall.jpg

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2996 ms

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2669 ms

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2332 ms

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2421 ms

img_1month_cam.png

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btn_seifukusi.png

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2510 ms

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rule_ttl.png

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rule_pnl_koudoukan.jpg

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dictionary_ttl.png

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dictionary_pnl_terms.jpg

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bnr_judocomic02_ov.jpg

2537 ms

Accessibility Review

judo-ch.jp accessibility score

72

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

judo-ch.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

judo-ch.jp SEO score

83

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

Links do not have descriptive text

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

    JA

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Judo-ch.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 Judo-ch.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

judo-ch.jp

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