Tools & Wizards About Us
chuman.co.jp screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

chuman.co.jp

株式会社中萬学院 - 神奈川県の塾・学習塾・進学塾・個別指導塾

Page Load Speed

5.2 sec in total

First Response

549 ms

Resources Loaded

4.4 sec

Page Rendered

231 ms

chuman.co.jp screenshot

About Website

Visit chuman.co.jp now to see the best up-to-date Chuman content for Japan and also check out these interesting facts you probably never knew about chuman.co.jp

中萬学院（ちゅうまんがくいん）は横浜市・藤沢市・平塚市・相模原市など神奈川県内に展開する塾（学習塾）です。中学受験・公立中高一貫校受検・高校受験・大学受験に対応、集団指導で、個別指導で、小学生から高校生まで一人ひとりに最適な学習の場をご提供します。

Visit chuman.co.jp

Key Findings

We analyzed Chuman.co.jp page load time and found that the first response time was 549 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

chuman.co.jp performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

22/100

10%

LCP (Largest Contentful Paint)

Value18.3 s

0/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value2,180 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value18.4 s

3/100

10%

Network Requests Diagram

chuman.co.jp

549 ms

www.chuman.co.jp

964 ms

reset.css

178 ms

common.css

356 ms

font-awesome.min.css

26 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 94% of them (64 requests) were addressed to the original Chuman.co.jp, 3% (2 requests) were made to Netdna.bootstrapcdn.com and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Chuman.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 75.9 kB (4%)

Content Size

1.9 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chuman.co.jp main page is 1.9 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. 30% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 28.9 kB

  • Original 35.8 kB
  • After minification 29.3 kB
  • After compression 7.0 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 6.5 kB, which is 18% 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 28.9 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 23.5 kB

  • Original 1.7 MB
  • After minification 1.7 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. Chuman images are well optimized though.

JavaScript Optimization

-19%

Potential reduce by 15.5 kB

  • Original 80.5 kB
  • After minification 80.3 kB
  • After compression 65.0 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 15.5 kB or 19% of the original size.

CSS Optimization

-37%

Potential reduce by 8.1 kB

  • Original 21.9 kB
  • After minification 21.9 kB
  • After compression 13.9 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. Chuman.co.jp needs all CSS files to be minified and compressed as it can save up to 8.1 kB or 37% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (37%)

Requests Now

65

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chuman. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chuman.co.jp

chuman.co.jp

549 ms

www.chuman.co.jp

www.chuman.co.jp

964 ms

reset.css

reset.css

178 ms

common.css

common.css

356 ms

font-awesome.min.css

font-awesome.min.css

26 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

689 ms

response.min.js

response.min.js

529 ms

common.js

common.js

531 ms

swiper.css

swiper.css

532 ms

swiper.min.js

swiper.min.js

716 ms

top.js

top.js

543 ms

top.css

top.css

704 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

709 ms

jquery.colorbox-ja.js

jquery.colorbox-ja.js

708 ms

colorbox.css

colorbox.css

724 ms

header_logo_01.png

header_logo_01.png

178 ms

header_contact_01.png

header_contact_01.png

179 ms

header_contact_02.png

header_contact_02.png

182 ms

header_contact_03.png

header_contact_03.png

178 ms

header_contact_04.png

header_contact_04.png

172 ms

header_menu_02.png

header_menu_02.png

179 ms

header_logo_02.png

header_logo_02.png

345 ms

header_menu_01.png

header_menu_01.png

353 ms

bnr_01.png

bnr_01.png

354 ms

bnr_02.png

bnr_02.png

355 ms

bnr_03.png

bnr_03.png

356 ms

bnr_04.png

bnr_04.png

362 ms

bnr_07.png

bnr_07.png

517 ms

bnr_06.png

bnr_06.png

529 ms

70th960x580KV03.jpg

70th960x580KV03.jpg

1239 ms

140229143320.webp

140229143320.webp

885 ms

170329174036.jpg

170329174036.jpg

1246 ms

120422123953.jpg

120422123953.jpg

1265 ms

110422113028.webp

110422113028.webp

860 ms

210417214309.jpg

210417214309.jpg

1408 ms

nouryokukaihatsu.webp

nouryokukaihatsu.webp

1034 ms

202309_cgp_trial.webp

202309_cgp_trial.webp

1065 ms

200402202142.jpg

200402202142.jpg

1725 ms

arrow_01.png

arrow_01.png

1244 ms

arrow_02.png

arrow_02.png

1414 ms

txt_index_05.png

txt_index_05.png

1420 ms

txt_index_06.png

txt_index_06.png

1423 ms

txt_index_07.png

txt_index_07.png

1446 ms

footer_contact_03.png

footer_contact_03.png

1584 ms

footer_contact_04.png

footer_contact_04.png

1591 ms

footer_contact_05.png

footer_contact_05.png

1598 ms

footer_contact_06.png

footer_contact_06.png

1601 ms

footer_contact_07.png

footer_contact_07.png

1627 ms

logo_sanarugroup.png

logo_sanarugroup.png

1759 ms

footer-bn001.gif

footer-bn001.gif

1768 ms

gtm.js

gtm.js

128 ms

footer-bn002.gif

footer-bn002.gif

1769 ms

tag.js

tag.js

29 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

11 ms

fixed_nav.html

fixed_nav.html

1611 ms

footer-bn003.gif

footer-bn003.gif

1637 ms

footer-bn004.gif

footer-bn004.gif

1723 ms

footer-bn005.gif

footer-bn005.gif

1763 ms

bg_header_01.png

bg_header_01.png

1770 ms

arrow_03.png

arrow_03.png

1774 ms

footer_arrow_01.png

footer_arrow_01.png

1617 ms

bul_circle_01.png

bul_circle_01.png

1642 ms

colorbox_overlay.png

colorbox_overlay.png

1719 ms

txt_index_05.png

txt_index_05.png

1762 ms

txt_index_06.png

txt_index_06.png

1768 ms

txt_index_07.png

txt_index_07.png

1771 ms

side_nav_01.png

side_nav_01.png

356 ms

side_nav_02.png

side_nav_02.png

393 ms

Accessibility Review

chuman.co.jp accessibility score

76

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.

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

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

chuman.co.jp best practices score

75

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

Page has valid source maps

SEO Factors

chuman.co.jp SEO score

98

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

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 Chuman.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 Chuman.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

chuman.co.jp

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