Access cocooncity.jp. ホーム｜コクーンシティ［COCOON CITY Saitama-Shintoshin］

name

value

score

weighting

FCP (First Contentful Paint)

Value8.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value32.1 s

0/100

25%

SI (Speed Index)

Value19.5 s

0/100

10%

TBT (Total Blocking Time)

Value1,830 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.319

36/100

15%

TTI (Time to Interactive)

Value46.5 s

0/100

10%

cocooncity.jp

663 ms

www.cocooncity.jp

1546 ms

default.css

559 ms

vendor.css

560 ms

layout.css

954 ms

Our browser made a total of 125 requests to load all elements on the main page. We found that 83% of them (104 requests) were addressed to the original Cocooncity.jp, 5% (6 requests) were made to Fonts.gstatic.com and 5% (6 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Cocooncity.jp.

Content Size

23.9 MB

After Optimization

23.1 MB

In fact, the total size of Cocooncity.jp main page is 23.9 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. Only a small number of websites need less resources to load. Images take 23.3 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 54.4 kB

Original 64.9 kB
After minification 52.3 kB
After compression 10.5 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 12.6 kB, which is 19% 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 54.4 kB or 84% of the original size.

Image Optimization

-2%

Potential reduce by 466.1 kB

Original 23.3 MB
After minification 22.8 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. COCOON CITY images are well optimized though.

JavaScript Optimization

-40%

Potential reduce by 156.4 kB

Original 391.7 kB
After minification 388.2 kB
After compression 235.3 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 156.4 kB or 40% of the original size.

CSS Optimization

-61%

Potential reduce by 121.3 kB

Original 198.6 kB
After minification 149.7 kB
After compression 77.3 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. Cocooncity.jp needs all CSS files to be minified and compressed as it can save up to 121.3 kB or 61% of the original size.

Requests Now

116

After Optimization

The browser has sent 116 CSS, Javascripts, AJAX and image requests in order to completely render the main page of COCOON CITY. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

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

High

Links do not have a discernible name

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

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document doesn't use legible font sizes

High

Tap targets are not sized appropriately

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 Cocooncity.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 Cocooncity.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

cocooncity.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

ホーム｜コクーンシティ［COCOON CITY Saitama-Shintoshin］

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

cocooncity.jp

www.cocooncity.jp

default.css

vendor.css

layout.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

cocooncity.jp

www.cocooncity.jp

default.css

vendor.css

layout.css

css2

layout-top.css

js

jquery-1.11.2.min.js

vendor.js

common.min.js

navi.js

top.min.js

jack.css

jquery.cookie.js

gtm.js

site-logo.svg

icon-lang.svg

header-menu-text.png

header-lang-text.png

header-banner-athletics.jpg

header-banner-mulberry.jpg

header-banner-facilities.jpg

icon-instagram_fff.png

icon-line_fff.png

icon-facebook_fff.png

main-bg.jpg

ID00000311-20240712_172948-img.png

ID00000312-20240709_120052-img.png

ID00000313-20240712_111109-img.jpg

ID00000309-20240620_182947-img.jpg

ID00000315-20240731_142938-img.jpg

ID00000310-20240708_101522-img.jpg

ID00000299-20240501_104908-img.jpg

ID00000301-20240517_154110-img.jpg

dot.png

ID00002499-20240630_172145-img.jpg

ID00002515-20240801_161211-img.jpg

ID00002496-20240608_170620-img.jpg

ID00002502-20240709_123745-img.jpg

ID00002482-20240801_100418-img.jpg

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ID00002510-20240712_101714-img.jpg