Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

kochi-chuo.ed.jp

高知中央高等学校

Page Load Speed

10 sec in total

First Response

1.3 sec

Resources Loaded

8.4 sec

Page Rendered

235 ms

kochi-chuo.ed.jp screenshot

About Website

Click here to check amazing Kochi Chuo content for Japan. Otherwise, check out these important facts you probably never knew about kochi-chuo.ed.jp

高知中央高校は、特色ある私立学校として、知・徳・技兼備の有為有能な社会人・職業人の育成を目指し、精神教育・情操教育を重んじ、豊かな人間性を養うことを期しています。

Visit kochi-chuo.ed.jp

Key Findings

We analyzed Kochi-chuo.ed.jp page load time and found that the first response time was 1.3 sec and then it took 8.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

kochi-chuo.ed.jp performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.1 s

1/100

10%

LCP (Largest Contentful Paint)

Value15.9 s

0/100

25%

SI (Speed Index)

Value13.9 s

1/100

10%

TBT (Total Blocking Time)

Value410 ms

66/100

30%

CLS (Cumulative Layout Shift)

Value0.287

42/100

15%

TTI (Time to Interactive)

Value9.8 s

27/100

10%

Network Requests Diagram

kochi-chuo.ed.jp

1324 ms

common.css

346 ms

text-size.js

348 ms

top.css

522 ms

nivo-slider.css

350 ms

Our browser made a total of 123 requests to load all elements on the main page. We found that 68% of them (84 requests) were addressed to the original Kochi-chuo.ed.jp, 18% (22 requests) were made to Pbs.twimg.com and 6% (7 requests) were made to Abs.twimg.com. The less responsive or slowest element that took the longest time to load (3.7 sec) belongs to the original domain Kochi-chuo.ed.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 431.7 kB (15%)

Content Size

2.8 MB

After Optimization

2.4 MB

In fact, the total size of Kochi-chuo.ed.jp main page is 2.8 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. 50% of websites need less resources to load. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 38.4 kB

  • Original 51.1 kB
  • After minification 48.3 kB
  • After compression 12.7 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 38.4 kB or 75% of the original size.

Image Optimization

-11%

Potential reduce by 272.0 kB

  • Original 2.5 MB
  • After minification 2.3 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. Obviously, Kochi Chuo needs image optimization as it can save up to 272.0 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-57%

Potential reduce by 105.4 kB

  • Original 186.1 kB
  • After minification 165.7 kB
  • After compression 80.7 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 105.4 kB or 57% of the original size.

CSS Optimization

-80%

Potential reduce by 15.8 kB

  • Original 19.8 kB
  • After minification 13.9 kB
  • After compression 3.9 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. Kochi-chuo.ed.jp needs all CSS files to be minified and compressed as it can save up to 15.8 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (25%)

Requests Now

122

After Optimization

91

The browser has sent 122 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kochi Chuo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

kochi-chuo.ed.jp accessibility score

70

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-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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.

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.

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

<frame> or <iframe> elements do not have a title

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Best Practices

kochi-chuo.ed.jp best practices score

67

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

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

kochi-chuo.ed.jp SEO score

97

Search Engine Optimization Advices

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

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kochi-chuo.ed.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 Kochi-chuo.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 Kochi Chuo. 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: