Tools & Wizards About Us
four-class.jp screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

four-class.jp

株式会社フォークラス　| 2500名の登録ライターとコンテンツ制作

Page Load Speed

7 sec in total

First Response

362 ms

Resources Loaded

6.3 sec

Page Rendered

266 ms

four-class.jp screenshot

About Website

Welcome to four-class.jp homepage info - get ready to check Four Class best content for Japan right away, or after learning these important things about four-class.jp

フォークラスは2,000名の登録ライターと美容・女性向けのネットワーク・メディア運営を活用し、ウェブ制作・コンテンツマーケティング（SEO）を提供するしています。また、イベントとコンテンツ制作を軸にしてファンコミュニティの活性化も行います。

Visit four-class.jp

Key Findings

We analyzed Four-class.jp page load time and found that the first response time was 362 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

four-class.jp performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value310 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

four-class.jp

362 ms

www.four-class.jp

1080 ms

common.css

774 ms

flexslider.css

478 ms

slick.css

503 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 82% of them (28 requests) were addressed to the original Four-class.jp, 6% (2 requests) were made to Ssl.google-analytics.com and 3% (1 request) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Four-class.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 237.7 kB (15%)

Content Size

1.6 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Four-class.jp main page is 1.6 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 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 20.2 kB

  • Original 26.4 kB
  • After minification 22.4 kB
  • After compression 6.3 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 4.1 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 20.2 kB or 76% of the original size.

Image Optimization

-2%

Potential reduce by 19.9 kB

  • Original 1.3 MB
  • After minification 1.3 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. Four Class images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 148.9 kB

  • Original 218.2 kB
  • After minification 214.3 kB
  • After compression 69.3 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 148.9 kB or 68% of the original size.

CSS Optimization

-82%

Potential reduce by 48.6 kB

  • Original 59.0 kB
  • After minification 44.6 kB
  • After compression 10.4 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. Four-class.jp needs all CSS files to be minified and compressed as it can save up to 48.6 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (32%)

Requests Now

31

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Four Class. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

four-class.jp

four-class.jp

362 ms

www.four-class.jp

www.four-class.jp

1080 ms

common.css

common.css

774 ms

flexslider.css

flexslider.css

478 ms

slick.css

slick.css

503 ms

slick-theme.css

slick-theme.css

535 ms

jquery.js

jquery.js

1061 ms

slick.min.js

slick.min.js

994 ms

jquery.inview.min.js

jquery.inview.min.js

950 ms

jquery.flexslider-min.js

jquery.flexslider-min.js

1167 ms

common.js

common.js

1032 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

250 ms

ga.js

ga.js

53 ms

m-menu.png

m-menu.png

472 ms

global_logo.png

global_logo.png

502 ms

i-mail24.png

i-mail24.png

509 ms

moji05.jpg

moji05.jpg

671 ms

shino01.jpg

shino01.jpg

679 ms

ohashi04.jpg

ohashi04.jpg

919 ms

mao01.jpg

mao01.jpg

944 ms

letstry0071.jpg

letstry0071.jpg

1614 ms

hv-thumb.png

hv-thumb.png

1005 ms

title0141.jpg

title0141.jpg

1898 ms

letstry0061.jpg

letstry0061.jpg

1779 ms

sdk.js

sdk.js

421 ms

top_board01.jpg

top_board01.jpg

2914 ms

edge.gif

edge.gif

1435 ms

dotted.gif

dotted.gif

1488 ms

arrow20.png

arrow20.png

1979 ms

mediabanner.jpg

mediabanner.jpg

2657 ms

__utm.gif

__utm.gif

16 ms

collect

collect

47 ms

113 ms

xd_arbiter.php

xd_arbiter.php

419 ms

Accessibility Review

four-class.jp accessibility score

81

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 input fields do not have accessible names

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

four-class.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

four-class.jp SEO score

93

Search Engine Optimization Advices

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

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 Four-class.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 Four-class.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

four-class.jp

Open Graph description is not detected on the main page of Four Class. 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: