Tools & Wizards About Us
kids-21.co.jp screenshot

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

kids-21.co.jp

株式会社キッズコーポレーション | 保育園を全国で290園以上運営

Page Load Speed

4.9 sec in total

First Response

301 ms

Resources Loaded

3.4 sec

Page Rendered

1.2 sec

kids-21.co.jp screenshot

About Website

Welcome to kids-21.co.jp homepage info - get ready to check Kids 21 best content for Japan right away, or after learning these important things about kids-21.co.jp

株式会社キッズコーポレーション。病院内・企業内・認可保育園の運営は、全国で290園以上の保育園を運営している株式会社キッズコーポレーションにお任せください。

Visit kids-21.co.jp

Key Findings

We analyzed Kids-21.co.jp page load time and found that the first response time was 301 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

kids-21.co.jp performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value11.4 s

5/100

10%

TBT (Total Blocking Time)

Value1,340 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0.062

97/100

15%

TTI (Time to Interactive)

Value16.1 s

6/100

10%

Network Requests Diagram

kids-21.co.jp

301 ms

kids-21.co.jp

706 ms

bootstrap-grid.min.css

611 ms

style.css

763 ms

slick-theme.css

34 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 76% of them (53 requests) were addressed to the original Kids-21.co.jp, 9% (6 requests) were made to Cdnjs.cloudflare.com and 6% (4 requests) were made to S3.ap-northeast-1.amazonaws.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Kids-21.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 101.2 kB (2%)

Content Size

4.3 MB

After Optimization

4.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kids-21.co.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. 50% of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 33.1 kB

  • Original 40.7 kB
  • After minification 30.0 kB
  • After compression 7.6 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. This page needs HTML code to be minified as it can gain 10.7 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 33.1 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 525 B

  • Original 4.1 MB
  • After minification 4.1 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. Kids 21 images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 63.0 kB

  • Original 97.6 kB
  • After minification 97.6 kB
  • After compression 34.6 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 63.0 kB or 65% of the original size.

CSS Optimization

-13%

Potential reduce by 4.5 kB

  • Original 35.2 kB
  • After minification 35.2 kB
  • After compression 30.7 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. Kids-21.co.jp needs all CSS files to be minified and compressed as it can save up to 4.5 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (42%)

Requests Now

67

After Optimization

39

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kids 21. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

kids-21.co.jp

kids-21.co.jp

301 ms

kids-21.co.jp

kids-21.co.jp

706 ms

bootstrap-grid.min.css

bootstrap-grid.min.css

611 ms

style.css

style.css

763 ms

slick-theme.css

slick-theme.css

34 ms

slick.css

slick.css

32 ms

top.css

top.css

612 ms

vegas.min.css

vegas.min.css

33 ms

aos.css

aos.css

35 ms

jquery.min.js

jquery.min.js

32 ms

slick.min.js

slick.min.js

34 ms

setting.js

setting.js

617 ms

vegas.min.js

vegas.min.js

33 ms

top.js

top.js

617 ms

css2

css2

31 ms

css2

css2

50 ms

gtm.js

gtm.js

278 ms

header_logo.svg

header_logo.svg

162 ms

biR8oDTuGARYzxT1vUdyNIjcqyTjKMrSgeqvX0iJ.png

biR8oDTuGARYzxT1vUdyNIjcqyTjKMrSgeqvX0iJ.png

748 ms

icon_kcnr.svg

icon_kcnr.svg

295 ms

icon_black_global.svg

icon_black_global.svg

294 ms

icon_black_otherwindow.svg

icon_black_otherwindow.svg

291 ms

ttl_sp_ourhoiku.jpg

ttl_sp_ourhoiku.jpg

571 ms

icon_white_next.svg

icon_white_next.svg

292 ms

icon_black_next.svg

icon_black_next.svg

437 ms

ttl_sp_facilities.png

ttl_sp_facilities.png

868 ms

ttl_sp_random_bg1.png

ttl_sp_random_bg1.png

864 ms

ttl_sp_company.jpg

ttl_sp_company.jpg

576 ms

ttl_sp_recruit.jpg

ttl_sp_recruit.jpg

875 ms

icon_white_right.svg

icon_white_right.svg

584 ms

icon_orange_right.svg

icon_orange_right.svg

714 ms

icon_blue_otherwindow.svg

icon_blue_otherwindow.svg

720 ms

para_item_01.svg

para_item_01.svg

731 ms

pc_map_v3.svg

pc_map_v3.svg

1286 ms

top_ozora_pc_bg.png

top_ozora_pc_bg.png

1149 ms

icon_white_otherwindow.svg

icon_white_otherwindow.svg

878 ms

icon_orange_otherwindow.svg

icon_orange_otherwindow.svg

1007 ms

icon_red_otherwindow.svg

icon_red_otherwindow.svg

1014 ms

icon_blue_right.svg

icon_blue_right.svg

1022 ms

top_company_pc_bg.jpg

top_company_pc_bg.jpg

1313 ms

icon_green_right.svg

icon_green_right.svg

1149 ms

free_dial.svg

free_dial.svg

1158 ms

icon_right.svg

icon_right.svg

1169 ms

logo_yoko.svg

logo_yoko.svg

289 ms

kidsfirst.svg

kidsfirst.svg

431 ms

service_site_image.png

service_site_image.png

1554 ms

top_facility_01.png

top_facility_01.png

713 ms

top_facility_02.png

top_facility_02.png

715 ms

top_facility_03.png

top_facility_03.png

716 ms

top_facility_04.png

top_facility_04.png

714 ms

top_facility_05.png

top_facility_05.png

574 ms

top_facility_06.png

top_facility_06.png

717 ms

ozora_site_image.png

ozora_site_image.png

998 ms

ozora_logo.svg

ozora_logo.svg

857 ms

top_recruit_kw.png

top_recruit_kw.png

1300 ms

top_recruit_new.png

top_recruit_new.png

1149 ms

top_sp_recruit_headquarters.png

top_sp_recruit_headquarters.png

1143 ms

top_pc_recruit_headquarters.png

top_pc_recruit_headquarters.png

1430 ms

img_common_bottom_contact.png

img_common_bottom_contact.png

1425 ms

btn_pagetop.svg

btn_pagetop.svg

1299 ms

icon_instagram.svg

icon_instagram.svg

1300 ms

icon_facebook.svg

icon_facebook.svg

1428 ms

icon_X.svg

icon_X.svg

1437 ms

BYLTyrxIArM161N3rsCbG6eJcP18HMWWpi4glm4Z.jpeg

BYLTyrxIArM161N3rsCbG6eJcP18HMWWpi4glm4Z.jpeg

1369 ms

mgDKSMjHxxQpJtjDTgABmfvk4CE5tC22xro1OEio.jpeg

mgDKSMjHxxQpJtjDTgABmfvk4CE5tC22xro1OEio.jpeg

1386 ms

MHEznnLvxSUNXH4GLgmeg4q6927hbM3ltLy0c5ZM.jpeg

MHEznnLvxSUNXH4GLgmeg4q6927hbM3ltLy0c5ZM.jpeg

1235 ms

font

font

44 ms

font

font

53 ms

02.png

02.png

13 ms

pc_kv1.jpg

pc_kv1.jpg

1289 ms

Accessibility Review

kids-21.co.jp accessibility score

95

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.

Best Practices

kids-21.co.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

High

Page has valid source maps

SEO Factors

kids-21.co.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

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kids-21.co.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 Kids-21.co.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

kids-21.co.jp

Open Graph data is detected on the main page of Kids 21. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: