Access junkudo.co.jp. 丸善ジュンク堂書店ネットストア

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

45/100

10%

LCP (Largest Contentful Paint)

Value39.4 s

0/100

25%

SI (Speed Index)

Value15.4 s

1/100

10%

TBT (Total Blocking Time)

Value3,390 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.161

73/100

15%

TTI (Time to Interactive)

Value33.6 s

0/100

10%

junkudo.co.jp

688 ms

owl.carousel.css

330 ms

owl.theme.css

329 ms

bootstrap.min.css

822 ms

notosansjapanese.css

18 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 46% of them (32 requests) were addressed to the original Junkudo.co.jp, 30% (21 requests) were made to Static.xx.fbcdn.net and 10% (7 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (849 ms) belongs to the original domain Junkudo.co.jp.

Content Size

1.1 MB

After Optimization

749.2 kB

In fact, the total size of Junkudo.co.jp main page is 1.1 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 782.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 31.0 kB

Original 39.1 kB
After minification 31.1 kB
After compression 8.1 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 8.0 kB, which is 20% 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 31.0 kB or 79% of the original size.

Image Optimization

-15%

Potential reduce by 119.5 kB

Original 782.3 kB
After minification 662.8 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, Junkudo needs image optimization as it can save up to 119.5 kB or 15% 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 95.3 kB

Original 148.5 kB
After minification 113.3 kB
After compression 53.2 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 95.3 kB or 64% of the original size.

CSS Optimization

-84%

Potential reduce by 128.1 kB

Original 153.3 kB
After minification 147.1 kB
After compression 25.2 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 128.1 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 61 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 28 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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 description is not detected on the main page of Junkudo. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

丸善ジュンク堂書店ネットストア

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

junkudo.co.jp

owl.carousel.css

owl.theme.css

bootstrap.min.css

notosansjapanese.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

junkudo.co.jp

owl.carousel.css

owl.theme.css

bootstrap.min.css

notosansjapanese.css

nav.css

main.css

js

jquery.min.js

instagram.js

jquery.min.js

bootstrap.min.js

owl.carousel.js

common.js

honto.js

junkudo_logo.png

top_006.jpg

top_004.png

top_005.png

icon_loader.gif

instagram_logo_2.png

facebook.png

twitter.png

instagram.png

nagasawa_logo.png

twitter_footer.png

google_footer.png

line_footer.png

mixi_footer.png

hatena_footer.png

facebook_footer.png

recruit.jpg

syohyo_logo2.png

honto.png

maruzen_logo.png

yajirushi_01.png

sdk.js

widgets.js

NotoSansJP-Regular.woff

NotoSansJP-Medium.woff

NotoSansJP-DemiLight.woff

NotoSansJP-Light.woff

NotoSansJP-Thin.woff