Access joho-gakushu.or.jp. 全日本情報学習振興協会、個人情報保護、オンライン試験システムの、全情協

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value27.0 s

0/100

25%

SI (Speed Index)

Value11.7 s

4/100

10%

TBT (Total Blocking Time)

Value3,420 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value26.6 s

0/100

10%

joho-gakushu.or.jp

768 ms

2013kakestyle.css

514 ms

roll.js

354 ms

add.php

753 ms

ga.js

95 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 73% of them (35 requests) were addressed to the original Joho-gakushu.or.jp, 6% (3 requests) were made to S.ytimg.com and 4% (2 requests) were made to 3939kaiseki.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Joho-gakushu.or.jp.

Content Size

847.1 kB

After Optimization

449.3 kB

In fact, the total size of Joho-gakushu.or.jp main page is 847.1 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. 40% of websites need less resources to load. Images take 315.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 29.7 kB

Original 36.1 kB
After minification 28.8 kB
After compression 6.4 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 7.3 kB, which is 20% 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 29.7 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 6.4 kB

Original 315.6 kB
After minification 309.2 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. Joho Gakushu images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 136.0 kB

Original 225.3 kB
After minification 225.1 kB
After compression 89.3 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 136.0 kB or 60% of the original size.

CSS Optimization

-84%

Potential reduce by 225.7 kB

Original 270.2 kB
After minification 266.8 kB
After compression 44.5 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. Joho-gakushu.or.jp needs all CSS files to be minified and compressed as it can save up to 225.7 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Joho Gakushu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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 Joho-gakushu.or.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 Joho-gakushu.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

joho-gakushu.or.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

全日本情報学習振興協会、個人情報保護、オンライン試験システムの、全情協

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

joho-gakushu.or.jp

2013kakestyle.css

roll.js

add.php

ga.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

joho-gakushu.or.jp

2013kakestyle.css

roll.js

add.php

ga.js

ecMWyRT2mg4

QME2g-JVsMo

head-bg.jpg

new_logo.gif

bann_mynumber-img.jpg

mynumber_title2.gif

bann_mynumbersemi-img.jpg

mynumbersemi_title3.gif

bann_piip-img.jpg

bann_piplp-img.jpg

bann_piipkosin-img.jpg

li-1.gif

li-2.gif

arr_sam.gif

new-kentei.gif

kotira.gif

new.gif

osusume_book.gif

manga_mynum_bann260-1.png

manga_mynum_bann260-2.png

kouenkai_bann340.png

menu-list.gif

topiia160.gif

tojhk160.gif

toapip160.gif

tobook160.gif

r-img2.jpg

cir04.gif

ya1412.gif

kyokai_foot-up.gif

kyokai_foot-down.gif

li-annai2014.gif

__utm.gif

www-embed-player-vflZsBgOl.css

www-embed-player.js

base.js

6BOEML_YqI6cKINK5dmh8ZufcXg7sBa4jeB-I9gQ0xI.js

ad_status.js