Report Summary

  • 37

    Performance

    Renders faster than
    57% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

edu-network.jp

塾専用教材|Juku Suite エデュケーショナルネットワーク総合トップ

Page Load Speed

3.9 sec in total

First Response

650 ms

Resources Loaded

2.8 sec

Page Rendered

466 ms

edu-network.jp screenshot

About Website

Visit edu-network.jp now to see the best up-to-date Edu Network content for Japan and also check out these interesting facts you probably never knew about edu-network.jp

塾専用教材・学校教材を販売。塾専用教材オンラインストアで購入もできる。小学教材・中学教材・高校教材まで塾専用教材が豊富。塾向け教育情報動画、保護者会資料など塾で役立つツールも充実。エデュケーショナルネットワーク

Visit edu-network.jp

Key Findings

We analyzed Edu-network.jp page load time and found that the first response time was 650 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

edu-network.jp performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

1/100

10%

LCP (Largest Contentful Paint)

Value11.2 s

0/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.365

29/100

15%

TTI (Time to Interactive)

Value9.3 s

31/100

10%

Network Requests Diagram

edu-network.jp

650 ms

normalize.css

303 ms

foundation.css

1072 ms

styles.css

492 ms

modernizr.js

330 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 93% of them (26 requests) were addressed to the original Edu-network.jp, 7% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Edu-network.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 631.2 kB (28%)

Content Size

2.3 MB

After Optimization

1.6 MB

In fact, the total size of Edu-network.jp main page is 2.3 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. 25% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 27.9 kB

  • Original 33.0 kB
  • After minification 14.7 kB
  • After compression 5.1 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 18.3 kB, which is 55% 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 27.9 kB or 85% of the original size.

Image Optimization

-9%

Potential reduce by 146.1 kB

  • Original 1.7 MB
  • After minification 1.5 MB

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. Edu Network images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 235.6 kB

  • Original 316.8 kB
  • After minification 243.5 kB
  • After compression 81.2 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 235.6 kB or 74% of the original size.

CSS Optimization

-90%

Potential reduce by 221.6 kB

  • Original 247.0 kB
  • After minification 183.0 kB
  • After compression 25.4 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. Edu-network.jp needs all CSS files to be minified and compressed as it can save up to 221.6 kB or 90% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (15%)

Requests Now

27

After Optimization

23

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Edu Network. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

edu-network.jp accessibility score

83

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

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

edu-network.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

edu-network.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

High

robots.txt is not valid

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Edu-network.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it does not match the claimed English language. Our system also found out that Edu-network.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 Edu Network. 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: