Report Summary

  • 77

    Performance

    Renders faster than
    85% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

toukansoku.co.jp

株式会社東京環境測定センター

Page Load Speed

5.3 sec in total

First Response

718 ms

Resources Loaded

4.3 sec

Page Rendered

249 ms

toukansoku.co.jp screenshot

About Website

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

東京環境測定センターでは、「あらゆる測定・分析・調査を、迅速・正確・適正な料金で・・」をモットーに、ご依頼事業所等の立場にたった環境等の整備・改善・コンサルティングを致します。

Visit toukansoku.co.jp

Key Findings

We analyzed Toukansoku.co.jp page load time and found that the first response time was 718 ms and then it took 4.5 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

toukansoku.co.jp performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

33/100

10%

LCP (Largest Contentful Paint)

Value3.6 s

60/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

Network Requests Diagram

toukansoku.co.jp

718 ms

style-st.css

493 ms

styleswitcher.js

391 ms

jquery.min.js

7 ms

jquery.crossFader.js

407 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 92% of them (35 requests) were addressed to the original Toukansoku.co.jp, 3% (1 request) were made to Ajax.googleapis.com and 3% (1 request) were made to W3.org. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Toukansoku.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (61%)

Content Size

2.4 MB

After Optimization

944.0 kB

In fact, the total size of Toukansoku.co.jp main page is 2.4 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 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 12.9 kB

  • Original 17.4 kB
  • After minification 15.7 kB
  • After compression 4.5 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. 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 12.9 kB or 74% of the original size.

Image Optimization

-60%

Potential reduce by 1.4 MB

  • Original 2.3 MB
  • After minification 928.1 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. Obviously, Toukansoku needs image optimization as it can save up to 1.4 MB or 60% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-78%

Potential reduce by 3.8 kB

  • Original 4.9 kB
  • After minification 3.0 kB
  • After compression 1.1 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 3.8 kB or 78% of the original size.

CSS Optimization

-90%

Potential reduce by 94.2 kB

  • Original 104.4 kB
  • After minification 80.4 kB
  • After compression 10.2 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. Toukansoku.co.jp needs all CSS files to be minified and compressed as it can save up to 94.2 kB or 90% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (16%)

Requests Now

37

After Optimization

31

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Toukansoku. 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.

Accessibility Review

toukansoku.co.jp accessibility score

93

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.

Best Practices

toukansoku.co.jp best practices score

58

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

SEO Factors

toukansoku.co.jp SEO score

67

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

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Toukansoku.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 Toukansoku.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

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