Tools & Wizards About Us
junkudo.co.jp screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    43% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 70% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

junkudo.co.jp

ジュンク堂書店 公式サイト| 書籍・雑誌、文具・雑貨等の販売

Page Load Speed

10.9 sec in total

First Response

355 ms

Resources Loaded

10.1 sec

Page Rendered

508 ms

junkudo.co.jp screenshot

About Website

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

専門書や希少本など、幅広く深い品揃えのジュンク堂書店の公式サイト。丸善ジュンク堂書店は、愚直なまでに本と文具の品揃えにこだわり、「図書館よりも図書館らしい」店づくりで、お客様のニーズにお応えします。

Visit junkudo.co.jp

Key Findings

We analyzed Junkudo.co.jp page load time and found that the first response time was 355 ms and then it took 10.6 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

junkudo.co.jp performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value36.2 s

0/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value2,430 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.161

73/100

15%

TTI (Time to Interactive)

Value17.8 s

4/100

10%

Network Requests Diagram

junkudo.co.jp

355 ms

www.junkudo.co.jp

705 ms

common.css

329 ms

screen.css

329 ms

bootstrap.css

527 ms

Our browser made a total of 178 requests to load all elements on the main page. We found that 49% of them (88 requests) were addressed to the original Junkudo.co.jp, 13% (24 requests) were made to Static.xx.fbcdn.net and 10% (17 requests) were made to Img.junkudo.co.jp. The less responsive or slowest element that took the longest time to load (6 sec) belongs to the original domain Junkudo.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (24%)

Content Size

5.8 MB

After Optimization

4.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Junkudo.co.jp main page is 5.8 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. 65% of websites need less resources to load. Images take 4.3 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 77.4 kB

  • Original 91.7 kB
  • After minification 60.4 kB
  • After compression 14.3 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 31.2 kB, which is 34% 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 77.4 kB or 84% of the original size.

Image Optimization

-5%

Potential reduce by 225.3 kB

  • Original 4.3 MB
  • After minification 4.0 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. Junkudo images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 436.7 kB

  • Original 660.9 kB
  • After minification 605.4 kB
  • After compression 224.2 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 436.7 kB or 66% of the original size.

CSS Optimization

-83%

Potential reduce by 615.3 kB

  • Original 740.6 kB
  • After minification 656.2 kB
  • After compression 125.3 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. Junkudo.co.jp needs all CSS files to be minified and compressed as it can save up to 615.3 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 83 (49%)

Requests Now

171

After Optimization

88

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 171 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Junkudo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 48 to 1 for JavaScripts and from 30 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

junkudo.co.jp

junkudo.co.jp

355 ms

www.junkudo.co.jp

www.junkudo.co.jp

705 ms

common.css

common.css

329 ms

screen.css

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329 ms

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527 ms

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511 ms

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661 ms

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665 ms

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703 ms

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874 ms

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31 ms

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28 ms

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1362 ms

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5 ms

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11 ms

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Accessibility Review

junkudo.co.jp accessibility score

88

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

junkudo.co.jp best practices score

58

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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

junkudo.co.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

High

robots.txt is not valid

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 Junkudo.co.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 Junkudo.co.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

junkudo.co.jp

Open Graph data is detected on the main page of Junkudo. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: