Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

jyukunavi.jp

塾・学習塾検索No.1|【塾ナビ】口コミ・ランキングで比較

Page Load Speed

10.2 sec in total

First Response

358 ms

Resources Loaded

7.7 sec

Page Rendered

2.2 sec

jyukunavi.jp screenshot

About Website

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

塾ナビでは全国の小学生、中学生、高校生の塾(学習塾)、予備校を網羅。口コミ(評判)、料金(授業料・月謝)、塾のランキングなど情報も満載なのでぴったりな塾(学習塾)、予備校が簡単に見つかります。今なら入塾祝いとして最大10万円ギフト券進呈中!

Visit jyukunavi.jp

Key Findings

We analyzed Jyukunavi.jp page load time and found that the first response time was 358 ms and then it took 9.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

jyukunavi.jp performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value11.4 s

5/100

10%

TBT (Total Blocking Time)

Value2,280 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value15.5 s

7/100

10%

Network Requests Diagram

jyukunavi.jp

358 ms

www.jyukunavi.jp

1726 ms

common.css

176 ms

index.css

296 ms

jquery_autocomplete.css

310 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 84% of them (98 requests) were addressed to the original Jyukunavi.jp, 3% (3 requests) were made to Google-analytics.com and 2% (2 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Jyukunavi.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 417.9 kB (53%)

Content Size

791.4 kB

After Optimization

373.4 kB

In fact, the total size of Jyukunavi.jp main page is 791.4 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. 55% of websites need less resources to load. Javascripts take 381.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 54.2 kB

  • Original 68.8 kB
  • After minification 62.0 kB
  • After compression 14.6 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 54.2 kB or 79% of the original size.

Image Optimization

-24%

Potential reduce by 65.6 kB

  • Original 277.8 kB
  • After minification 212.2 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. Obviously, Jyukunavi needs image optimization as it can save up to 65.6 kB or 24% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-64%

Potential reduce by 244.6 kB

  • Original 381.3 kB
  • After minification 316.9 kB
  • After compression 136.8 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 244.6 kB or 64% of the original size.

CSS Optimization

-84%

Potential reduce by 53.5 kB

  • Original 63.5 kB
  • After minification 45.7 kB
  • After compression 9.9 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. Jyukunavi.jp needs all CSS files to be minified and compressed as it can save up to 53.5 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (36%)

Requests Now

109

After Optimization

70

The browser has sent 109 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jyukunavi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

jyukunavi.jp accessibility score

76

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

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

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

jyukunavi.jp best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

jyukunavi.jp SEO score

77

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

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 doesn't use 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 Jyukunavi.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 Jyukunavi.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

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