Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

tousyun-denki.co.jp

変電所や企業の高圧電気設備の定期点検 メンテナンス 工事 愛知県春日井市の東春電気工業

Page Load Speed

3.9 sec in total

First Response

817 ms

Resources Loaded

2.9 sec

Page Rendered

228 ms

tousyun-denki.co.jp screenshot

About Website

Click here to check amazing Tousyun Denki content. Otherwise, check out these important facts you probably never knew about tousyun-denki.co.jp

愛知県春日井市の東春電気工業のコーポレートサイト

Visit tousyun-denki.co.jp

Key Findings

We analyzed Tousyun-denki.co.jp page load time and found that the first response time was 817 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

tousyun-denki.co.jp performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.7 s

0/100

10%

LCP (Largest Contentful Paint)

Value20.6 s

0/100

25%

SI (Speed Index)

Value16.4 s

0/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.926

3/100

15%

TTI (Time to Interactive)

Value12.2 s

15/100

10%

Network Requests Diagram

tousyun-denki.co.jp

817 ms

import.css

350 ms

AC_RunActiveContent.js

533 ms

module.js

359 ms

heightLine.js

370 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 80% of them (35 requests) were addressed to the original Tousyun-denki.co.jp, 5% (2 requests) were made to Google-analytics.com and 5% (2 requests) were made to S.ytimg.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Tousyun-denki.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 432.5 kB (41%)

Content Size

1.1 MB

After Optimization

626.8 kB

In fact, the total size of Tousyun-denki.co.jp main page is 1.1 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. 45% of websites need less resources to load. Images take 539.9 kB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 6.4 kB

  • Original 9.7 kB
  • After minification 9.3 kB
  • After compression 3.3 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. 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 6.4 kB or 66% of the original size.

Image Optimization

-10%

Potential reduce by 54.4 kB

  • Original 539.9 kB
  • After minification 485.6 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. Tousyun Denki images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 145.4 kB

  • Original 236.7 kB
  • After minification 232.4 kB
  • After compression 91.3 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 145.4 kB or 61% of the original size.

CSS Optimization

-83%

Potential reduce by 226.4 kB

  • Original 273.1 kB
  • After minification 268.6 kB
  • After compression 46.7 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. Tousyun-denki.co.jp needs all CSS files to be minified and compressed as it can save up to 226.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (48%)

Requests Now

40

After Optimization

21

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tousyun Denki. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

tousyun-denki.co.jp accessibility score

86

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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

tousyun-denki.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

SEO Factors

tousyun-denki.co.jp SEO score

85

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

Links do not have descriptive text

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 Tousyun-denki.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 Tousyun-denki.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

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