Tools & Wizards About Us
428255.jp screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

428255.jp

四谷学院の情報発信サイト ｜ ヨツヤにゴーゴー.jp

Page Load Speed

5 sec in total

First Response

576 ms

Resources Loaded

3.9 sec

Page Rendered

511 ms

428255.jp screenshot

About Website

Welcome to 428255.jp homepage info - get ready to check 428255 best content for Japan right away, or after learning these important things about 428255.jp

ヨツヤにゴーゴー.jpでは、学部学科がわかる本のほか、面白くてためになるマンガシリーズなど四谷学院の様々なお役立ちコンテンツをご紹介しています。

Visit 428255.jp

Key Findings

We analyzed 428255.jp page load time and found that the first response time was 576 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

428255.jp performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

17/100

10%

LCP (Largest Contentful Paint)

Value13.2 s

0/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value2,350 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.278

44/100

15%

TTI (Time to Interactive)

Value17.8 s

4/100

10%

Network Requests Diagram

428255.jp

576 ms

www.428255.jp

1111 ms

gtm.js

100 ms

common.css

189 ms

style.css

380 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 96% of them (44 requests) were addressed to the original 428255.jp, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain 428255.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 34.5 kB (4%)

Content Size

949.4 kB

After Optimization

914.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 428255.jp main page is 949.4 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 885.6 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 10.7 kB

  • Original 14.6 kB
  • After minification 12.8 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 1.8 kB, which is 13% 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 10.7 kB or 74% of the original size.

Image Optimization

-1%

Potential reduce by 9.9 kB

  • Original 885.6 kB
  • After minification 875.7 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. 428255 images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 38 B

  • Original 33.0 kB
  • After minification 33.0 kB
  • After compression 33.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-85%

Potential reduce by 13.8 kB

  • Original 16.2 kB
  • After minification 12.7 kB
  • After compression 2.4 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. 428255.jp needs all CSS files to be minified and compressed as it can save up to 13.8 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (23%)

Requests Now

44

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 428255. 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.

Network Requests Diagram

428255.jp

428255.jp

576 ms

www.428255.jp

www.428255.jp

1111 ms

gtm.js

gtm.js

100 ms

common.css

common.css

189 ms

style.css

style.css

380 ms

jquery.min.js

jquery.min.js

41 ms

bg02.png

bg02.png

191 ms

bg03.jpg

bg03.jpg

1060 ms

bg01.png

bg01.png

385 ms

logo.png

logo.png

513 ms

logo_sp.png

logo_sp.png

518 ms

sp_menu01.png

sp_menu01.png

534 ms

sp_menu02.png

sp_menu02.png

536 ms

sp_menu03.png

sp_menu03.png

570 ms

sp_menu05.png

sp_menu05.png

685 ms

sp_menu06.png

sp_menu06.png

691 ms

nev_useful.png

nev_useful.png

713 ms

nav_line.png

nav_line.png

717 ms

nev_comic.png

nev_comic.png

755 ms

nev_sns.png

nev_sns.png

859 ms

nev_student.png

nev_student.png

864 ms

main_ttl.png

main_ttl.png

893 ms

main_txt.png

main_txt.png

898 ms

main_sp.jpg

main_sp.jpg

1128 ms

icon_useful.png

icon_useful.png

1032 ms

icon_new.png

icon_new.png

1037 ms

img_benkyoho.png

img_benkyoho.png

1073 ms

img_wakaru.png

img_wakaru.png

1079 ms

icon_comic.png

icon_comic.png

1205 ms

img_sakusen.png

img_sakusen.png

1379 ms

img_gyakuten.png

img_gyakuten.png

1232 ms

img_suiei.png

img_suiei.png

1252 ms

icon_sns.png

icon_sns.png

1260 ms

icon_facebook.png

icon_facebook.png

1313 ms

icon_twitter.png

icon_twitter.png

1377 ms

icon_instagram.png

icon_instagram.png

1406 ms

icon_youtube.png

icon_youtube.png

1431 ms

icon_student.png

icon_student.png

1439 ms

img_renraku.png

img_renraku.png

1498 ms

img_kyuko.png

img_kyuko.png

1549 ms

img_mail.png

img_mail.png

1551 ms

img_map.png

img_map.png

1580 ms

img_sp.png

img_sp.png

1426 ms

img_site.png

img_site.png

1243 ms

img_coupon.png

img_coupon.png

1177 ms

footer_icn_arrow.gif

footer_icn_arrow.gif

1211 ms

Accessibility Review

428255.jp accessibility score

66

Accessibility Issues

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.

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

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

428255.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

428255.jp SEO score

100

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

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 428255.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 428255.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

428255.jp

Open Graph description is not detected on the main page of 428255. 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: