Report Summary

  • 37

    Performance

    Renders faster than
    57% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

tokaigakuen.ed.jp

東海学園高等学校

Page Load Speed

4.9 sec in total

First Response

712 ms

Resources Loaded

4 sec

Page Rendered

204 ms

tokaigakuen.ed.jp screenshot

About Website

Click here to check amazing Tokaigakuen content. Otherwise, check out these important facts you probably never knew about tokaigakuen.ed.jp

東海学園高等学校は、浄土宗立の学校として、「共生(ともいき)」の精神を教育理念にした学校です。

Visit tokaigakuen.ed.jp

Key Findings

We analyzed Tokaigakuen.ed.jp page load time and found that the first response time was 712 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

tokaigakuen.ed.jp performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value360 ms

72/100

30%

CLS (Cumulative Layout Shift)

Value0.542

13/100

15%

TTI (Time to Interactive)

Value5.3 s

72/100

10%

Network Requests Diagram

tokaigakuen.ed.jp

712 ms

impact.css

341 ms

cmn.js

358 ms

libr.css

367 ms

flash_top.js

390 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 97% of them (76 requests) were addressed to the original Tokaigakuen.ed.jp, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Tokaigakuen.ed.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 67.0 kB (25%)

Content Size

265.7 kB

After Optimization

198.7 kB

In fact, the total size of Tokaigakuen.ed.jp main page is 265.7 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. 25% of websites need less resources to load. Images take 213.2 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 16.0 kB

  • Original 19.9 kB
  • After minification 17.0 kB
  • After compression 3.9 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 2.9 kB, which is 15% 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 16.0 kB or 80% of the original size.

Image Optimization

-18%

Potential reduce by 38.5 kB

  • Original 213.2 kB
  • After minification 174.7 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. Obviously, Tokaigakuen needs image optimization as it can save up to 38.5 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-22%

Potential reduce by 5.2 kB

  • Original 24.1 kB
  • After minification 23.6 kB
  • After compression 18.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 5.2 kB or 22% of the original size.

CSS Optimization

-87%

Potential reduce by 7.3 kB

  • Original 8.4 kB
  • After minification 6.6 kB
  • After compression 1.1 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. Tokaigakuen.ed.jp needs all CSS files to be minified and compressed as it can save up to 7.3 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (36%)

Requests Now

76

After Optimization

49

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tokaigakuen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

tokaigakuen.ed.jp accessibility score

66

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

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

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

tokaigakuen.ed.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

tokaigakuen.ed.jp SEO score

83

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

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 Tokaigakuen.ed.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 Tokaigakuen.ed.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 Tokaigakuen. 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: