Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 94

    SEO

    Google-friendlier than
    91% of websites

jsbc.or.jp

一般社団法人 日本サステナブル建築協会(JSBC)

Page Load Speed

4.5 sec in total

First Response

797 ms

Resources Loaded

3.6 sec

Page Rendered

113 ms

jsbc.or.jp screenshot

About Website

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

一般社団法人日本サステナブル建築協会(JSBC)のウェブサイトです。

Visit jsbc.or.jp

Key Findings

We analyzed Jsbc.or.jp page load time and found that the first response time was 797 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

jsbc.or.jp performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.0 s

100/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

3/100

25%

SI (Speed Index)

Value4.7 s

68/100

10%

TBT (Total Blocking Time)

Value230 ms

87/100

30%

CLS (Cumulative Layout Shift)

Value0.53

14/100

15%

TTI (Time to Interactive)

Value4.8 s

79/100

10%

Network Requests Diagram

jsbc.or.jp

797 ms

screen_m.css

370 ms

styleswitcher.js

392 ms

smoothscroll.js

590 ms

smartRollover.js

395 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 96% of them (51 requests) were addressed to the original Jsbc.or.jp, 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Jsbc.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 75.6 kB (57%)

Content Size

132.8 kB

After Optimization

57.2 kB

In fact, the total size of Jsbc.or.jp main page is 132.8 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. 20% of websites need less resources to load. Javascripts take 63.8 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 10.8 kB

  • Original 14.3 kB
  • After minification 12.8 kB
  • After compression 3.5 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 10.8 kB or 76% of the original size.

Image Optimization

-6%

Potential reduce by 818 B

  • Original 14.6 kB
  • After minification 13.7 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. JSBC images are well optimized though.

JavaScript Optimization

-46%

Potential reduce by 29.6 kB

  • Original 63.8 kB
  • After minification 55.9 kB
  • After compression 34.2 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 29.6 kB or 46% of the original size.

CSS Optimization

-86%

Potential reduce by 34.4 kB

  • Original 40.1 kB
  • After minification 18.2 kB
  • After compression 5.7 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. Jsbc.or.jp needs all CSS files to be minified and compressed as it can save up to 34.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (60%)

Requests Now

52

After Optimization

21

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JSBC. 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 14 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

jsbc.or.jp accessibility score

95

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

jsbc.or.jp best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

jsbc.or.jp SEO score

94

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

    SHIFT-JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jsbc.or.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 Jsbc.or.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 JSBC. 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: