Tools & Wizards About Us
jbanet.or.jp screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 87

    SEO

    Google-friendlier than
    65% of websites

jbanet.or.jp

トップページ | 一般社団法人 日本ボイラ協会

Page Load Speed

4.9 sec in total

First Response

558 ms

Resources Loaded

3.9 sec

Page Rendered

367 ms

jbanet.or.jp screenshot

About Website

Click here to check amazing Jbanet content for Japan. Otherwise, check out these important facts you probably never knew about jbanet.or.jp

一般社団法人日本ボイラ協会のウェブサイトです。ボイラ協会では、ボイラーや圧力容器についての調査研究、検査検定、教育・相談、広報・出版、技術交流の場の提供、品質マネジメントシステムの審査、登録などを行っています。

Visit jbanet.or.jp

Key Findings

We analyzed Jbanet.or.jp page load time and found that the first response time was 558 ms and then it took 4.3 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

jbanet.or.jp performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

22/100

10%

LCP (Largest Contentful Paint)

Value37.6 s

0/100

25%

SI (Speed Index)

Value7.1 s

31/100

10%

TBT (Total Blocking Time)

Value410 ms

66/100

30%

CLS (Cumulative Layout Shift)

Value0.463

19/100

15%

TTI (Time to Interactive)

Value12.9 s

13/100

10%

Network Requests Diagram

jbanet.or.jp

558 ms

www.jbanet.or.jp

1126 ms

style.min.css

149 ms

import.css

296 ms

slick.css

431 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 80% of them (36 requests) were addressed to the original Jbanet.or.jp, 13% (6 requests) were made to Fonts.gstatic.com and 2% (1 request) were made to Ajaxzip3.github.io. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Jbanet.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 176.1 kB (19%)

Content Size

907.6 kB

After Optimization

731.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jbanet.or.jp main page is 907.6 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. 30% of websites need less resources to load. Images take 676.1 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 113.3 kB

  • Original 125.2 kB
  • After minification 70.3 kB
  • After compression 11.9 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 54.9 kB, which is 44% 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 113.3 kB or 91% of the original size.

Image Optimization

-8%

Potential reduce by 57.2 kB

  • Original 676.1 kB
  • After minification 618.9 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. Jbanet images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 2.0 kB

  • Original 44.9 kB
  • After minification 44.7 kB
  • After compression 42.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-6%

Potential reduce by 3.7 kB

  • Original 61.4 kB
  • After minification 61.3 kB
  • After compression 57.7 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. Jbanet.or.jp has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 19 (56%)

Requests Now

34

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jbanet. 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 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jbanet.or.jp

jbanet.or.jp

558 ms

www.jbanet.or.jp

www.jbanet.or.jp

1126 ms

style.min.css

style.min.css

149 ms

import.css

import.css

296 ms

slick.css

slick.css

431 ms

slick-theme.css

slick-theme.css

442 ms

top.css

top.css

469 ms

print.css

print.css

470 ms

jquery-3.4.1.min.js

jquery-3.4.1.min.js

632 ms

ajaxzip3.js

ajaxzip3.js

14 ms

common.js

common.js

491 ms

viewport.js

viewport.js

575 ms

slick.min.js

slick.min.js

589 ms

top.js

top.js

624 ms

css

css

29 ms

all.min.css

all.min.css

494 ms

notosansjp.css

notosansjp.css

361 ms

reset.css

reset.css

424 ms

base_set.css

base_set.css

441 ms

share.css

share.css

486 ms

header_footer.css

header_footer.css

500 ms

template.css

template.css

525 ms

gtm.js

gtm.js

229 ms

logo.svg

logo.svg

360 ms

header_menu_sp.svg

header_menu_sp.svg

362 ms

header_close_sp.svg

header_close_sp.svg

362 ms

header_close_pc.svg

header_close_pc.svg

357 ms

asbestos-seminor-toppage.jpg

asbestos-seminor-toppage.jpg

433 ms

2024.jpg

2024.jpg

612 ms

youtubepr.jpg

youtubepr.jpg

978 ms

Microsoft-PowerPoint-%E3%83%97%E3%83%AC%E3%82%BC%E3%83%B3%E3%83%86%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B31_02-scaled-e1680231128278.jpg

Microsoft-PowerPoint-%E3%83%97%E3%83%AC%E3%82%BC%E3%83%B3%E3%83%86%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B31_02-scaled-e1680231128278.jpg

559 ms

2020-chuuikanki-1.jpg

2020-chuuikanki-1.jpg

743 ms

banner01.jpg

banner01.jpg

746 ms

topOutsideMenu_onlineShop.png

topOutsideMenu_onlineShop.png

747 ms

attention_link01_pc.svg

attention_link01_pc.svg

705 ms

attention_link02_pc.svg

attention_link02_pc.svg

777 ms

NotoSansJP-Regular.woff

NotoSansJP-Regular.woff

35 ms

NotoSansJP-Medium.woff

NotoSansJP-Medium.woff

103 ms

NotoSansJP-Light.woff

NotoSansJP-Light.woff

129 ms

NotoSansJP-Thin.woff

NotoSansJP-Thin.woff

129 ms

NotoSansJP-Bold.woff

NotoSansJP-Bold.woff

131 ms

NotoSansJP-Black.woff

NotoSansJP-Black.woff

131 ms

fa-solid-900.woff

fa-solid-900.woff

1024 ms

fa-regular-400.woff

fa-regular-400.woff

1251 ms

fa-light-300.woff

fa-light-300.woff

945 ms

Accessibility Review

jbanet.or.jp accessibility score

86

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-hidden="true"] elements contain focusable descendents

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

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

jbanet.or.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

jbanet.or.jp SEO score

87

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

    JA

  • Encoding

    UTF-8

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

jbanet.or.jp

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