Access duel.co.jp. 釣具の総合メーカーデュエル

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value38.6 s

0/100

25%

SI (Speed Index)

Value10.4 s

8/100

10%

TBT (Total Blocking Time)

Value1,650 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.055

98/100

15%

TTI (Time to Interactive)

Value50.4 s

0/100

10%

duel.co.jp

511 ms

duel.co.jp

1382 ms

jquery-ui-1.11.4.css

371 ms

colorbox-1.6.1.css

567 ms

editor.css

681 ms

Our browser made a total of 85 requests to load all elements on the main page. We found that 88% of them (75 requests) were addressed to the original Duel.co.jp, 2% (2 requests) were made to Fonts.googleapis.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Duel.co.jp.

Content Size

5.8 MB

After Optimization

5.5 MB

In fact, the total size of Duel.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. 55% of websites need less resources to load. Images take 5.2 MB which makes up the majority of the site volume.

HTML Optimization

-97%

Potential reduce by 232.0 kB

Original 240.1 kB
After minification 69.4 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 170.6 kB, which is 71% 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 232.0 kB or 97% of the original size.

Image Optimization

-1%

Potential reduce by 49.3 kB

Original 5.2 MB
After minification 5.2 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. Duel images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 37.4 kB

Original 278.9 kB
After minification 278.9 kB
After compression 241.5 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 37.4 kB or 13% of the original size.

CSS Optimization

-15%

Potential reduce by 15.4 kB

Original 104.8 kB
After minification 104.8 kB
After compression 89.5 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. Duel.co.jp needs all CSS files to be minified and compressed as it can save up to 15.4 kB or 15% of the original size.

Requests Now

After Optimization

The browser has sent 75 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duel. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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 interpretation of your content by users in different locales.

High

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

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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 Duel.co.jp 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 Duel.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

duel.co.jp

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

釣具の総合メーカー デュエル

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

duel.co.jp

duel.co.jp

jquery-ui-1.11.4.css

colorbox-1.6.1.css

editor.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

duel.co.jp

duel.co.jp

jquery-ui-1.11.4.css

colorbox-1.6.1.css

editor.css

duel.css

jquery-1.11.3.min.js

jquery-ui-1.11.4.min.js

ui.datepicker-ja.js

jquery-accessibleMegaMenu.js

style-build.css

duel.css

duel.css

css2

all.css

js

bundle.js

css2

mlp5pdc.js

logo-pc.png

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釣具の総合メーカーデュエル