Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

duo-inc.co.jp

DUO International / ルアーメーカー デュオ

Page Load Speed

2.1 sec in total

First Response

599 ms

Resources Loaded

1.4 sec

Page Rendered

122 ms

duo-inc.co.jp screenshot

About Website

Visit duo-inc.co.jp now to see the best up-to-date DUO Inc content for Russia and also check out these interesting facts you probably never knew about duo-inc.co.jp

ルアーメーカー株式会社デュオ(DUO International)。海・川・湖あらゆる魚種・ジャンルに適した釣具アイテムを展開。ハンドカービング技術を中心に、一貫した自社生産スタイル・国内生産 NIPPON QUALITY

Visit duo-inc.co.jp

Key Findings

We analyzed Duo-inc.co.jp page load time and found that the first response time was 599 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

duo-inc.co.jp performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.9 s

1/100

10%

LCP (Largest Contentful Paint)

Value12.5 s

0/100

25%

SI (Speed Index)

Value12.6 s

3/100

10%

TBT (Total Blocking Time)

Value240 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value1.056

2/100

15%

TTI (Time to Interactive)

Value14.0 s

10/100

10%

Network Requests Diagram

duo-inc.co.jp

599 ms

top.css

390 ms

swfobject.js

396 ms

logo.gif

378 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Duo-inc.co.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (599 ms) belongs to the original domain Duo-inc.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 9.8 kB (73%)

Content Size

13.5 kB

After Optimization

3.6 kB

In fact, the total size of Duo-inc.co.jp main page is 13.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Javascripts take 6.9 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 3.3 kB

  • Original 4.2 kB
  • After minification 1.6 kB
  • After compression 899 B

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 2.6 kB, which is 61% 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 3.3 kB or 78% of the original size.

JavaScript Optimization

-69%

Potential reduce by 4.8 kB

  • Original 6.9 kB
  • After minification 6.6 kB
  • After compression 2.1 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 4.8 kB or 69% of the original size.

CSS Optimization

-74%

Potential reduce by 1.8 kB

  • Original 2.4 kB
  • After minification 1.6 kB
  • After compression 621 B

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. Duo-inc.co.jp needs all CSS files to be minified and compressed as it can save up to 1.8 kB or 74% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

3

After Optimization

3

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DUO Inc. According to our analytics all requests are already optimized.

Accessibility Review

duo-inc.co.jp accessibility score

86

Accessibility Issues

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

duo-inc.co.jp best practices score

67

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

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

duo-inc.co.jp SEO score

92

Search Engine Optimization Advices

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 Duo-inc.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 Duo-inc.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

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