Tools & Wizards About Us
kokatsu.jp screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

kokatsu.jp

IPv4アドレス枯渇対応タスクフォース｜Task Force on IPv4 Address Exhaustion, Japan

Page Load Speed

3.8 sec in total

First Response

568 ms

Resources Loaded

3 sec

Page Rendered

265 ms

kokatsu.jp screenshot

About Website

Click here to check amazing Kokatsu content. Otherwise, check out these important facts you probably never knew about kokatsu.jp

IPv4アドレス枯渇対応タスクフォースの概要や参加団体紹介、最新情報、イベント情報などを公開しています。

Visit kokatsu.jp

Key Findings

We analyzed Kokatsu.jp page load time and found that the first response time was 568 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

kokatsu.jp performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

22/100

10%

LCP (Largest Contentful Paint)

Value8.4 s

2/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0.011

100/100

15%

TTI (Time to Interactive)

Value4.8 s

79/100

10%

Network Requests Diagram

kokatsu.jp

568 ms

204 ms

styles.css

191 ms

t_mini-a.png

30 ms

brand

14 ms

Our browser made a total of 113 requests to load all elements on the main page. We found that 55% of them (62 requests) were addressed to the original Kokatsu.jp, 7% (8 requests) were made to Inetcore.com and 7% (8 requests) were made to Metric.inetcore.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Kokatsu.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 210.5 kB (47%)

Content Size

446.2 kB

After Optimization

235.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kokatsu.jp main page is 446.2 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. 40% of websites need less resources to load. Javascripts take 217.4 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 15.2 kB

  • Original 21.4 kB
  • After minification 19.4 kB
  • After compression 6.2 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 15.2 kB or 71% of the original size.

Image Optimization

-16%

Potential reduce by 23.9 kB

  • Original 152.4 kB
  • After minification 128.4 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. Obviously, Kokatsu needs image optimization as it can save up to 23.9 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-58%

Potential reduce by 125.8 kB

  • Original 217.4 kB
  • After minification 215.3 kB
  • After compression 91.6 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 125.8 kB or 58% of the original size.

CSS Optimization

-83%

Potential reduce by 45.6 kB

  • Original 55.1 kB
  • After minification 46.5 kB
  • After compression 9.5 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. Kokatsu.jp needs all CSS files to be minified and compressed as it can save up to 45.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 42 (39%)

Requests Now

108

After Optimization

66

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kokatsu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

kokatsu.jp

kokatsu.jp

568 ms

204 ms

styles.css

styles.css

191 ms

t_mini-a.png

t_mini-a.png

30 ms

brand

brand

14 ms

jquery.min.js

jquery.min.js

6 ms

menuhover.js

menuhover.js

294 ms

widget.js

widget.js

53 ms

btn_contact.gif

btn_contact.gif

343 ms

rss-16x16.png

rss-16x16.png

565 ms

wolf_c.js

wolf_c.js

616 ms

46meter.js

46meter.js

610 ms

brand

brand

27 ms

ictepc.gif

ictepc.gif

562 ms

nav-data-on.gif

nav-data-on.gif

200 ms

logo.gif

logo.gif

229 ms

border_dot.gif

border_dot.gif

313 ms

dot_sort.gif

dot_sort.gif

398 ms

sort_japan.gif

sort_japan.gif

400 ms

sort_en.gif

sort_en.gif

400 ms

nav_about.gif

nav_about.gif

397 ms

nav_news.gif

nav_news.gif

486 ms

nav_event.gif

nav_event.gif

561 ms

nav-data.gif

nav-data.gif

560 ms

nav_member.gif

nav_member.gif

564 ms

nav-faq.gif

nav-faq.gif

591 ms

target-nav-isp-b.jpg

target-nav-isp-b.jpg

593 ms

target-nav-catv-b.jpg

target-nav-catv-b.jpg

655 ms

target-nav-idc-b.jpg

target-nav-idc-b.jpg

675 ms

target-nav-xsp-b.jpg

target-nav-xsp-b.jpg

729 ms

target-nav-user-b.jpg

target-nav-user-b.jpg

749 ms

target-nav-others-b.jpg

target-nav-others-b.jpg

789 ms

main-20120529.jpg

main-20120529.jpg

1178 ms

ttl_aboutkokatu.gif

ttl_aboutkokatu.gif

824 ms

ttl_update.gif

ttl_update.gif

820 ms

rss.gif

rss.gif

902 ms

ico_event.gif

ico_event.gif

935 ms

ico_news.gif

ico_news.gif

981 ms

btn_newstop.gif

btn_newstop.gif

964 ms

ttl_calendar_ja.gif

ttl_calendar_ja.gif

995 ms

logo3.gif

logo3.gif

1089 ms

World_IPv6_launch_badge_64.png

World_IPv6_launch_badge_64.png

1130 ms

ttl_member.gif

ttl_member.gif

1128 ms

banner_v6pc.jpg

banner_v6pc.jpg

1176 ms

banner_iajapan.jpg

banner_iajapan.jpg

1164 ms

banner_ciaj.jpg

banner_ciaj.jpg

1276 ms

google_custom_search_watermark.gif

google_custom_search_watermark.gif

41 ms

applic.jpg

applic.jpg

1254 ms

embed

embed

30 ms

lasdec.jpg

lasdec.jpg

1201 ms

embed

embed

149 ms

SA1.php

SA1.php

229 ms

banner_telesa.jpg

banner_telesa.jpg

1213 ms

banner_tca.jpg

banner_tca.jpg

1183 ms

banner_jate.jpg

banner_jate.jpg

1154 ms

0992f33945a94632a64d2587cfa6f814embedcompiled_fastui.css

0992f33945a94632a64d2587cfa6f814embedcompiled_fastui.css

2 ms

0992f33945a94632a64d2587cfa6f814embedcompiled__en.js

0992f33945a94632a64d2587cfa6f814embedcompiled__en.js

21 ms

client.js

client.js

75 ms

banner_jaipa.jpg

banner_jaipa.jpg

1098 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

10 ms

small_logo_background_left.png

small_logo_background_left.png

101 ms

small_logo_background_right.png

small_logo_background_right.png

212 ms

small_logo_backgroud_main.png

small_logo_backgroud_main.png

213 ms

banner_jcta.jpg

banner_jcta.jpg

1118 ms

postmessageRelay

postmessageRelay

51 ms

jlabs.jpg

jlabs.jpg

1106 ms

jdcc.jpg

jdcc.jpg

1118 ms

banner_jadac.jpg

banner_jadac.jpg

1178 ms

banner_jpnic.jpg

banner_jpnic.jpg

1177 ms

index.html

index.html

184 ms

46meter.cgi

46meter.cgi

382 ms

ga.js

ga.js

6 ms

__utm.gif

__utm.gif

14 ms

3193398744-postmessagerelay.js

3193398744-postmessagerelay.js

20 ms

rpc:shindig_random.js

rpc:shindig_random.js

32 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

4 ms

banner_janog.jpg

banner_janog.jpg

1070 ms

logo-plus.png

logo-plus.png

46 ms

googlelogo_color_46x16dp.png

googlelogo_color_46x16dp.png

66 ms

proxy.html

proxy.html

61 ms

blank.gif

blank.gif

25 ms

menu_arrow_open.gif

menu_arrow_open.gif

7 ms

icon_print.gif

icon_print.gif

25 ms

combined_v22.png

combined_v22.png

33 ms

banner_jnsa.jpg

banner_jnsa.jpg

1098 ms

banner_jus.jpg

banner_jus.jpg

1127 ms

banner_jprs.jpg

banner_jprs.jpg

1123 ms

Wolf6.js

Wolf6.js

180 ms

localizedStrings.js

localizedStrings.js

345 ms

46meter.js

46meter.js

343 ms

banner_hyper.jpg

banner_hyper.jpg

1109 ms

banner_wide.jpg

banner_wide.jpg

1181 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

3 ms

events

events

70 ms

events

events

91 ms

events

events

28 ms

events

events

85 ms

banner_soumu.jpg

banner_soumu.jpg

1119 ms

btn_pagetop.gif

btn_pagetop.gif

1168 ms

copyright.gif

copyright.gif

1298 ms

bg.gif

bg.gif

1127 ms

ipv4ipv6meter.gif

ipv4ipv6meter.gif

320 ms

00.png

00.png

346 ms

30.png

30.png

346 ms

10.png

10.png

374 ms

20.png

20.png

375 ms

arw_01.gif

arw_01.gif

1053 ms

bg_footer.gif

bg_footer.gif

1147 ms

Wolf6.css

Wolf6.css

178 ms

Default.png

Default.png

178 ms

bg.png

bg.png

173 ms

__utm.gif

__utm.gif

11 ms

getririnfo2.php

getririnfo2.php

238 ms

Accessibility Review

kokatsu.jp accessibility score

79

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

Best Practices

kokatsu.jp best practices score

50

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

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

kokatsu.jp SEO score

67

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

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 Kokatsu.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 Kokatsu.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

kokatsu.jp

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