Access rikakentei.com. 理検|理科検定公式サイト

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

20/100

25%

SI (Speed Index)

Value14.6 s

1/100

10%

TBT (Total Blocking Time)

Value4,280 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.046

99/100

15%

TTI (Time to Interactive)

Value35.4 s

0/100

10%

rikakentei.com

555 ms

rikakentei.com

730 ms

www.rikakentei.com

549 ms

www.rikakentei.com

1146 ms

style.css

492 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 36% of them (33 requests) were addressed to the original Rikakentei.com, 14% (13 requests) were made to Static.xx.fbcdn.net and 9% (8 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Rikakentei.com.

Content Size

3.3 MB

After Optimization

2.8 MB

In fact, the total size of Rikakentei.com main page is 3.3 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. Only a small number of websites need less resources to load. Images take 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 57.4 kB

Original 77.3 kB
After minification 67.9 kB
After compression 19.8 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 9.4 kB, which is 12% 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 57.4 kB or 74% of the original size.

Image Optimization

-12%

Potential reduce by 305.8 kB

Original 2.6 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, Rikakentei needs image optimization as it can save up to 305.8 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-27%

Potential reduce by 157.4 kB

Original 592.1 kB
After minification 584.7 kB
After compression 434.7 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 157.4 kB or 27% of the original size.

CSS Optimization

-14%

Potential reduce by 10.5 kB

Original 74.6 kB
After minification 71.0 kB
After compression 64.1 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. Rikakentei.com needs all CSS files to be minified and compressed as it can save up to 10.5 kB or 14% of the original size.

Requests Now

After Optimization

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rikakentei. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 38 to 1 for JavaScripts and from 6 to 1 for CSS 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 semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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 experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

High

Browser errors were logged to the console

High

Page has valid source maps

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

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rikakentei.com 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 Rikakentei.com 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

rikakentei.com

Open Graph description is not detected on the main page of Rikakentei. 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

理検|理科検定 公式サイト

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

rikakentei.com

rikakentei.com

www.rikakentei.com

www.rikakentei.com

style.css

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

rikakentei.com

rikakentei.com

www.rikakentei.com

www.rikakentei.com

style.css

jquery.js

script.js

jquery.smoothscroll.js

jquery.scrollshow.js

jquery.rollover.js

jquery.slidewide.js

js

MathJax.js

loader.min.js

widgets.js

analytics.js

MathJax.js

ja.png

headerlogo.gif

rikenmail.png

pdca2024.jpg

header6.jpg

qr_chokosoku.png

mathart1.png

mathart2.png

mathart.png

takinogawa.jpg

takeda_sora1.jpg

steam.png

chemistry-audiobook.png

j3-grade.png

t-expression1.png

t-expression2.png

fax.png

rikenteam.png

romaji.jpg

kochi.jpg

line.png

jyukusagasu_banner.png

totop.png

share_button.php

preview

preview

理検|理科検定公式サイト