Tools & Wizards About Us
chuo-kentetsu.co.jp screenshot

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 88

    SEO

    Google-friendlier than
    66% of websites

chuo-kentetsu.co.jp

┃中央建鉄 株式会社┃ 補償コンサルタント ≪事業損失（家屋調査）／騒音振動調査／被害予測／耐震診断≫

Page Load Speed

3.5 sec in total

First Response

779 ms

Resources Loaded

2.6 sec

Page Rendered

143 ms

chuo-kentetsu.co.jp screenshot

About Website

Welcome to chuo-kentetsu.co.jp homepage info - get ready to check Chuo Kentetsu best content right away, or after learning these important things about chuo-kentetsu.co.jp

中央建鉄は、人と環境のインテグレーターとしてよりよい環境づくりに貢献します。

Visit chuo-kentetsu.co.jp

Key Findings

We analyzed Chuo-kentetsu.co.jp page load time and found that the first response time was 779 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

chuo-kentetsu.co.jp performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

20/100

10%

LCP (Largest Contentful Paint)

Value19.6 s

0/100

25%

SI (Speed Index)

Value18.5 s

0/100

10%

TBT (Total Blocking Time)

Value160 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

Network Requests Diagram

chuo-kentetsu.co.jp

779 ms

fcs.js

378 ms

other.css

199 ms

bg_top.gif

192 ms

spacer.gif

202 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that all of those requests were addressed to Chuo-kentetsu.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Chuo-kentetsu.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 10.3 kB (23%)

Content Size

44.2 kB

After Optimization

33.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chuo-kentetsu.co.jp main page is 44.2 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. Only 5% of websites need less resources to load. Images take 32.7 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 6.5 kB

  • Original 9.1 kB
  • After minification 8.2 kB
  • After compression 2.6 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. 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 6.5 kB or 72% of the original size.

Image Optimization

-6%

Potential reduce by 1.9 kB

  • Original 32.7 kB
  • After minification 30.8 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. Chuo Kentetsu images are well optimized though.

JavaScript Optimization

-82%

Potential reduce by 1.3 kB

  • Original 1.5 kB
  • After minification 1.1 kB
  • After compression 275 B

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 1.3 kB or 82% of the original size.

CSS Optimization

-69%

Potential reduce by 573 B

  • Original 834 B
  • After minification 593 B
  • After compression 261 B

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. Chuo-kentetsu.co.jp needs all CSS files to be minified and compressed as it can save up to 573 B or 69% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (57%)

Requests Now

28

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chuo Kentetsu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

chuo-kentetsu.co.jp

chuo-kentetsu.co.jp

779 ms

fcs.js

fcs.js

378 ms

other.css

other.css

199 ms

bg_top.gif

bg_top.gif

192 ms

spacer.gif

spacer.gif

202 ms

top_img1.jpg

top_img1.jpg

768 ms

top_c.gif

top_c.gif

393 ms

top_bline1.gif

top_bline1.gif

383 ms

top_b1.gif

top_b1.gif

394 ms

top_b2.gif

top_b2.gif

541 ms

top_b2_1.gif

top_b2_1.gif

396 ms

top_b2_2.gif

top_b2_2.gif

574 ms

top_b2_3.gif

top_b2_3.gif

581 ms

top_b2_4.gif

top_b2_4.gif

587 ms

top_b2_5.gif

top_b2_5.gif

586 ms

top_bline2.gif

top_bline2.gif

733 ms

top_img2.gif

top_img2.gif

763 ms

top_banner_to_labo.gif

top_banner_to_labo.gif

771 ms

top_banner_to_taishin.png

top_banner_to_taishin.png

1005 ms

top_privacy.gif

top_privacy.gif

777 ms

copyright_top.gif

copyright_top.gif

925 ms

top_b1_f2.gif

top_b1_f2.gif

193 ms

top_b2_f2.gif

top_b2_f2.gif

197 ms

top_b2_1_f2.gif

top_b2_1_f2.gif

192 ms

top_b2_2_f2.gif

top_b2_2_f2.gif

195 ms

top_b2_3_f2.gif

top_b2_3_f2.gif

194 ms

top_b2_4_f2.gif

top_b2_4_f2.gif

195 ms

top_b2_5_f2.gif

top_b2_5_f2.gif

381 ms

top_privacy_f2.gif

top_privacy_f2.gif

381 ms

Accessibility Review

chuo-kentetsu.co.jp accessibility score

77

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 input fields do not have accessible names

High

ARIA toggle fields do not have accessible names

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

chuo-kentetsu.co.jp best practices score

67

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

chuo-kentetsu.co.jp SEO score

88

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

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Chuo-kentetsu.co.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 Chuo-kentetsu.co.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

chuo-kentetsu.co.jp

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