Tools & Wizards About Us
tokyolesson.com screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 65

    Accessibility

    Visual factors better than
    that of 30% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

tokyolesson.com

習い事、レッスン、を東京・横浜・川崎・埼玉で行う【東京レッスン.com】

Page Load Speed

13.7 sec in total

First Response

522 ms

Resources Loaded

12.2 sec

Page Rendered

1 sec

tokyolesson.com screenshot

About Website

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

「東京レッスン.com」は1回完結のレッスンを始め、様々な習い事を東京・横浜・川崎・埼玉で行える予約＆検索ポータルサイトです。資料請求や体験レッスン・説明会情報が充実。各教室の講座や資格取得も目指せるスクールが満載です。あなたに合ったスクールを見つけてください！

Visit tokyolesson.com

Key Findings

We analyzed Tokyolesson.com page load time and found that the first response time was 522 ms and then it took 13.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

tokyolesson.com performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value16.3 s

0/100

25%

SI (Speed Index)

Value11.8 s

4/100

10%

TBT (Total Blocking Time)

Value320 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0.108

87/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

Network Requests Diagram

tokyolesson.com

522 ms

www.tokyolesson.com

715 ms

www.tokyolesson.com

946 ms

index.css

335 ms

footer.css

496 ms

Our browser made a total of 259 requests to load all elements on the main page. We found that 97% of them (251 requests) were addressed to the original Tokyolesson.com, 1% (2 requests) were made to Code.jquery.com and 1% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Tokyolesson.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 193.9 kB (3%)

Content Size

7.0 MB

After Optimization

6.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tokyolesson.com main page is 7.0 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. 60% of websites need less resources to load. Images take 6.8 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 98.3 kB

  • Original 121.4 kB
  • After minification 104.6 kB
  • After compression 23.1 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 16.7 kB, which is 14% 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 98.3 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 44.5 kB

  • Original 6.8 MB
  • After minification 6.7 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. Tokyolesson images are well optimized though.

JavaScript Optimization

-58%

Potential reduce by 38.0 kB

  • Original 66.0 kB
  • After minification 65.4 kB
  • After compression 28.0 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 38.0 kB or 58% of the original size.

CSS Optimization

-41%

Potential reduce by 13.2 kB

  • Original 31.8 kB
  • After minification 31.6 kB
  • After compression 18.6 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. Tokyolesson.com needs all CSS files to be minified and compressed as it can save up to 13.2 kB or 41% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (15%)

Requests Now

233

After Optimization

198

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 233 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tokyolesson. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

tokyolesson.com

tokyolesson.com

522 ms

www.tokyolesson.com

www.tokyolesson.com

715 ms

www.tokyolesson.com

www.tokyolesson.com

946 ms

index.css

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335 ms

footer.css

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496 ms

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507 ms

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505 ms

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Accessibility Review

tokyolesson.com accessibility score

65

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.

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

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

High

Definition list items are not wrapped in <dl> elements

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

tokyolesson.com best practices score

67

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

tokyolesson.com SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    N/A

  • Encoding

    UTF-8

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

tokyolesson.com

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