Tools & Wizards About Us
c21mirai.co.jp screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

c21mirai.co.jp

埼玉県川口市の不動産なら株式会社未来住販

Page Load Speed

7.2 sec in total

First Response

1.1 sec

Resources Loaded

5.8 sec

Page Rendered

321 ms

c21mirai.co.jp screenshot

About Website

Visit c21mirai.co.jp now to see the best up-to-date C 21 Mirai content and also check out these interesting facts you probably never knew about c21mirai.co.jp

埼玉県川口市の不動産なら株式会社未来住販におまかせ！あなたの住まい探しを精一杯お手伝いいたします。

Visit c21mirai.co.jp

Key Findings

We analyzed C21mirai.co.jp page load time and found that the first response time was 1.1 sec and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

c21mirai.co.jp performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value13.7 s

0/100

25%

SI (Speed Index)

Value18.9 s

0/100

10%

TBT (Total Blocking Time)

Value1,030 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0.21

59/100

15%

TTI (Time to Interactive)

Value20.9 s

1/100

10%

Network Requests Diagram

www.c21mirai.co.jp

1128 ms

slick.css

180 ms

style.css

535 ms

color-setting.css

503 ms

freeword.css

502 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 70% of them (31 requests) were addressed to the original C21mirai.co.jp, 9% (4 requests) were made to Platform.twitter.com and 7% (3 requests) were made to Syndication.twitter.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain C21mirai.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 317.9 kB (18%)

Content Size

1.8 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of C21mirai.co.jp main page is 1.8 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. 25% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 50.4 kB

  • Original 59.7 kB
  • After minification 51.0 kB
  • After compression 9.3 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 8.7 kB, which is 15% 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 50.4 kB or 84% of the original size.

Image Optimization

-5%

Potential reduce by 70.2 kB

  • Original 1.3 MB
  • After minification 1.3 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. C 21 Mirai images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 391 B

  • Original 145.7 kB
  • After minification 145.7 kB
  • After compression 145.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-88%

Potential reduce by 196.9 kB

  • Original 224.4 kB
  • After minification 147.4 kB
  • After compression 27.5 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. C21mirai.co.jp needs all CSS files to be minified and compressed as it can save up to 196.9 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (50%)

Requests Now

42

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of C 21 Mirai. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.c21mirai.co.jp

www.c21mirai.co.jp

1128 ms

slick.css

slick.css

180 ms

style.css

style.css

535 ms

color-setting.css

color-setting.css

503 ms

freeword.css

freeword.css

502 ms

style-custom.css

style-custom.css

517 ms

jquery-1.10.1.min.js

jquery-1.10.1.min.js

1076 ms

jquery.tile.js

jquery.tile.js

549 ms

jquery.lazyload.min.js

jquery.lazyload.min.js

668 ms

jquery.cookie.min.js

jquery.cookie.min.js

668 ms

slick.min.js

slick.min.js

861 ms

athome.jquery.checkbox.js

athome.jquery.checkbox.js

708 ms

fulltext-search.js

fulltext-search.js

711 ms

siggest.fixed.jquery.js

siggest.fixed.jquery.js

836 ms

common.js

common.js

1171 ms

add_common.js

add_common.js

882 ms

contact.js

contact.js

890 ms

fontplus.js

fontplus.js

852 ms

js

js

58 ms

widgets.js

widgets.js

183 ms

sdk.js

sdk.js

116 ms

js

js

210 ms

logo_pc.jpg

logo_pc.jpg

200 ms

2164424.jpg

2164424.jpg

1147 ms

2164419.jpg

2164419.jpg

1878 ms

2270930.jpg

2270930.jpg

933 ms

2164420.jpg

2164420.jpg

1252 ms

2164423.jpg

2164423.jpg

1501 ms

img_loading.gif

img_loading.gif

374 ms

2332869.png

2332869.png

954 ms

2164430.jpg

2164430.jpg

1166 ms

860286.png

860286.png

1197 ms

2164426.jpg

2164426.jpg

1394 ms

2164427.jpg

2164427.jpg

1405 ms

athm-spl2.ttf

athm-spl2.ttf

1354 ms

sdk.js

sdk.js

6 ms

61 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

58 ms

gmaps.js

gmaps.js

1449 ms

settings

settings

98 ms

button.856debeac157d9669cf51e73a08fbc93.js

button.856debeac157d9669cf51e73a08fbc93.js

22 ms

embeds

embeds

49 ms

embeds

embeds

56 ms

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

41 ms

Accessibility Review

c21mirai.co.jp accessibility score

73

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

c21mirai.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

c21mirai.co.jp SEO score

89

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

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 C21mirai.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 C21mirai.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

c21mirai.co.jp

Open Graph description is not detected on the main page of C 21 Mirai. 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: