Access j-e-a-n-s.net. ジーンズの情報サイトジーンズネット [ J-E-A-N-S.NET ]

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value370 ms

71/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.4 s

15/100

10%

j-e-a-n-s.net

533 ms

www.j-e-a-n-s.net

1092 ms

jquery.min.js

26 ms

bootstrap.min.js

41 ms

font-awesome.min.css

47 ms

Our browser made a total of 148 requests to load all elements on the main page. We found that 59% of them (87 requests) were addressed to the original J-e-a-n-s.net, 9% (14 requests) were made to Ad.jp.ap.valuecommerce.com and 9% (14 requests) were made to I.imgvc.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain J-e-a-n-s.net.

Content Size

2.9 MB

After Optimization

2.6 MB

In fact, the total size of J-e-a-n-s.net main page is 2.9 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 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 59.6 kB

Original 74.8 kB
After minification 63.0 kB
After compression 15.3 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 11.8 kB, which is 16% 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 59.6 kB or 80% of the original size.

Image Optimization

-4%

Potential reduce by 103.9 kB

Original 2.6 MB
After minification 2.5 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. J E A N S images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 104.8 kB

Original 153.3 kB
After minification 153.3 kB
After compression 48.5 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 104.8 kB or 68% of the original size.

CSS Optimization

-79%

Potential reduce by 107.8 kB

Original 135.9 kB
After minification 135.8 kB
After compression 28.0 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. J-e-a-n-s.net needs all CSS files to be minified and compressed as it can save up to 107.8 kB or 79% of the original size.

Requests Now

135

After Optimization

104

The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of J E A N S. 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 7 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

<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

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

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

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

High

Links are not crawlable

High

robots.txt is not valid

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

High

Tap targets are not sized appropriately

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 J-e-a-n-s.net 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 J-e-a-n-s.net 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

j-e-a-n-s.net

Open Graph description is not detected on the main page of J E A N S. 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

ジーンズの情報サイト ジーンズネット [ J-E-A-N-S.NET ]

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

j-e-a-n-s.net

www.j-e-a-n-s.net

jquery.min.js

bootstrap.min.js

font-awesome.min.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

j-e-a-n-s.net

www.j-e-a-n-s.net

jquery.min.js

bootstrap.min.js

font-awesome.min.css

bootstrap.css

index.css

rakuten_widget.js

jsbanner

sscrolling.js

css

css

htmlbanner

htmlbanner

banner_3.png

htmlbanner

show

logo_w_234x60.jpg

gifbanner

gifbanner

gifbanner

gifbanner

gifbanner

gifbanner

gifbanner

2-trans.png

top.png

TEXTLOGO.gif

feed-icon-14x14.png

1238054197.jpg

1240561911.jpg

1240286293.jpg

1244527498.jpg

1240804085.jpg

1267069290.jpg

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ジーンズの情報サイトジーンズネット [ J-E-A-N-S.NET ]