Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 77

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

jema-net.or.jp

JEMA 一般社団法人 日本電機工業会

Page Load Speed

6.4 sec in total

First Response

1.3 sec

Resources Loaded

4.9 sec

Page Rendered

215 ms

jema-net.or.jp screenshot

About Website

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

電力・産業システム、新エネルギー、原子力プラントシステム、家電機器、地球環境保全、規格・標準化、統計、ニュースリリースや当会の概要等を含む、JEMA総合ご案内ページです。

Visit jema-net.or.jp

Key Findings

We analyzed Jema-net.or.jp page load time and found that the first response time was 1.3 sec and then it took 5.1 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

jema-net.or.jp performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value10.6 s

0/100

25%

SI (Speed Index)

Value5.8 s

51/100

10%

TBT (Total Blocking Time)

Value200 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0.836

5/100

15%

TTI (Time to Interactive)

Value8.8 s

36/100

10%

Network Requests Diagram

jema-net.or.jp

1254 ms

reset.css

294 ms

ua.js

317 ms

optimizer.js

356 ms

styleswitcher.js

361 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that all of those requests were addressed to Jema-net.or.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Jema-net.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 465.7 kB (41%)

Content Size

1.1 MB

After Optimization

681.6 kB

In fact, the total size of Jema-net.or.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. 20% of websites need less resources to load. Images take 558.7 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 61.6 kB

  • Original 72.5 kB
  • After minification 50.5 kB
  • After compression 10.9 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 22.0 kB, which is 30% 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 61.6 kB or 85% of the original size.

Image Optimization

-6%

Potential reduce by 31.7 kB

  • Original 558.7 kB
  • After minification 527.0 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. JEMA Net images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 350.5 kB

  • Original 489.1 kB
  • After minification 462.2 kB
  • After compression 138.6 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 350.5 kB or 72% of the original size.

CSS Optimization

-81%

Potential reduce by 21.9 kB

  • Original 27.0 kB
  • After minification 22.0 kB
  • After compression 5.1 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. Jema-net.or.jp needs all CSS files to be minified and compressed as it can save up to 21.9 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (40%)

Requests Now

89

After Optimization

53

The browser has sent 89 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JEMA Net. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

jema-net.or.jp accessibility score

69

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

jema-net.or.jp best practices score

77

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

High

Registers an unload listener

Low

Detected JavaScript libraries

SEO Factors

jema-net.or.jp SEO score

82

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

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

    UTF-8

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

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