Tools & Wizards About Us

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

toshin.com

大学受験の塾・予備校なら東進

Page Load Speed

20.9 sec in total

First Response

514 ms

Resources Loaded

18.3 sec

Page Rendered

2.1 sec

About Website

Click here to check amazing Toshin content for Japan. Otherwise, check out these important facts you probably never knew about toshin.com

2024年も東大・旧七帝大+2・早慶などで日本一の現役合格実績を更新。東進の合格力の理由(ワケ)を体験しよう。予備校・大学受験の東進ハイスクール、東進衛星予備校公式サイト。

Visit toshin.com

Key Findings

We analyzed Toshin.com page load time and found that the first response time was 514 ms and then it took 20.4 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

toshin.com performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value16.5 s

0/100

25%

SI (Speed Index)

Value22.0 s

0/100

10%

TBT (Total Blocking Time)

Value7,260 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.401

25/100

15%

TTI (Time to Interactive)

Value46.1 s

0/100

10%

Network Requests Diagram

toshin.com

514 ms

www.toshin.com

52 ms

www.toshin.com

2796 ms

global.css

225 ms

slick.css

737 ms

Our browser made a total of 573 requests to load all elements on the main page. We found that 53% of them (305 requests) were addressed to the original Toshin.com, 7% (40 requests) were made to Google-analytics.com and 5% (27 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3.3 sec) belongs to the original domain Toshin.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 569.0 kB (11%)

Content Size

5.0 MB

After Optimization

4.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Toshin.com main page is 5.0 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 3.7 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 349.2 kB

  • Original 404.0 kB
  • After minification 282.6 kB
  • After compression 54.8 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 121.4 kB, which is 30% 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 349.2 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 498 B

  • Original 3.7 MB
  • After minification 3.7 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. Toshin images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 218.5 kB

  • Original 773.1 kB
  • After minification 772.6 kB
  • After compression 554.6 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 218.5 kB or 28% of the original size.

CSS Optimization

-1%

Potential reduce by 753 B

  • Original 68.0 kB
  • After minification 68.0 kB
  • After compression 67.3 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. Toshin.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 289 (52%)

Requests Now

551

After Optimization

262

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 551 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Toshin. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 89 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

toshin.com accessibility score

79

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.

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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

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

toshin.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

toshin.com SEO score

89

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

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 Toshin.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 Toshin.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

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