Tools & Wizards About Us
jsrae.or.jp screenshot

Report Summary

  • 60

    Performance

    Renders faster than
    76% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

jsrae.or.jp

日本冷凍空調学会

Page Load Speed

4.2 sec in total

First Response

730 ms

Resources Loaded

3.2 sec

Page Rendered

267 ms

jsrae.or.jp screenshot

About Website

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

冷凍空調分野の学術団体。冷凍空調システムや食品冷凍等の最新技術や研究論文リスト。冷凍空調、食品冷凍技士等の技術者資格認定や冷凍空調技術のセミナー案内

Visit jsrae.or.jp

Key Findings

We analyzed Jsrae.or.jp page load time and found that the first response time was 730 ms and then it took 3.5 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

jsrae.or.jp performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value15.2 s

0/100

25%

SI (Speed Index)

Value6.2 s

44/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.091

92/100

15%

TTI (Time to Interactive)

Value5.1 s

76/100

10%

Network Requests Diagram

jsrae.or.jp

730 ms

jquery-ui-1.9.2.custom.min.css

458 ms

jquery-1.8.3.js

1222 ms

jquery-ui-1.9.2.custom.min.js

535 ms

index_event.html

156 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that all of those requests were addressed to Jsrae.or.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Jsrae.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 288.9 kB (51%)

Content Size

568.0 kB

After Optimization

279.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jsrae.or.jp main page is 568.0 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 10% of websites need less resources to load. Javascripts take 295.8 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 24.7 kB

  • Original 32.6 kB
  • After minification 28.9 kB
  • After compression 7.9 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 3.7 kB, which is 11% 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 24.7 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 2.9 kB

  • Original 219.6 kB
  • After minification 216.7 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. Jsrae images are well optimized though.

JavaScript Optimization

-83%

Potential reduce by 245.2 kB

  • Original 295.8 kB
  • After minification 174.2 kB
  • After compression 50.6 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 245.2 kB or 83% of the original size.

CSS Optimization

-80%

Potential reduce by 16.1 kB

  • Original 20.1 kB
  • After minification 19.5 kB
  • After compression 4.0 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. Jsrae.or.jp needs all CSS files to be minified and compressed as it can save up to 16.1 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

15

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jsrae. According to our analytics all requests are already optimized.

Network Requests Diagram

jsrae.or.jp

jsrae.or.jp

730 ms

jquery-ui-1.9.2.custom.min.css

jquery-ui-1.9.2.custom.min.css

458 ms

jquery-1.8.3.js

jquery-1.8.3.js

1222 ms

jquery-ui-1.9.2.custom.min.js

jquery-ui-1.9.2.custom.min.js

535 ms

index_event.html

index_event.html

156 ms

index_semi.html

index_semi.html

330 ms

index_pub.html

index_pub.html

365 ms

index_news.html

index_news.html

371 ms

logo-7.jpg

logo-7.jpg

797 ms

jstage.gif

jstage.gif

346 ms

maru10.gif

maru10.gif

438 ms

up.gif

up.gif

609 ms

small_new1[1].gif

small_new1[1].gif

640 ms

ui-bg_flat_75_ffffff_40x100.png

ui-bg_flat_75_ffffff_40x100.png

640 ms

ui-bg_highlight-soft_100_cce5e5_1x100.png

ui-bg_highlight-soft_100_cce5e5_1x100.png

678 ms

ui-bg_glass_75_e6e6e6_1x400.png

ui-bg_glass_75_e6e6e6_1x400.png

749 ms

ui-bg_glass_65_ffffff_1x400.png

ui-bg_glass_65_ffffff_1x400.png

975 ms

jar.css

jar.css

838 ms

logo_large.png

logo_large.png

1211 ms

Reito_logo_1001.jpg

Reito_logo_1001.jpg

990 ms

Accessibility Review

jsrae.or.jp accessibility score

89

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.

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

Best Practices

jsrae.or.jp best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

jsrae.or.jp SEO score

79

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 Jsrae.or.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 Jsrae.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

jsrae.or.jp

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