Tools & Wizards About Us
dunet.co.jp screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    67% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

dunet.co.jp

アパート・マンションのインターネットなら【D.U-NET】

Page Load Speed

3.4 sec in total

First Response

439 ms

Resources Loaded

2.8 sec

Page Rendered

155 ms

dunet.co.jp screenshot

About Website

Click here to check amazing D U NET content. Otherwise, check out these important facts you probably never knew about dunet.co.jp

D.U-NET（株）は様々なインターネットサービスを通じて、より快適な住環境を目指し、安定したインターネット接続環境をご入居者にご提供いたします。D.U-NET、D-room Wi-Fi、D.U光などD-room入居者様だけが利用できるさまざまなインターネットサービスを利用して快適なアパート・マンション賃貸生活を過ごしましょう。

Visit dunet.co.jp

Key Findings

We analyzed Dunet.co.jp page load time and found that the first response time was 439 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

dunet.co.jp performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value15.0 s

0/100

25%

SI (Speed Index)

Value12.2 s

3/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.017

100/100

15%

TTI (Time to Interactive)

Value8.8 s

36/100

10%

Network Requests Diagram

dunet.co.jp

439 ms

www.dunet.co.jp

597 ms

import.css

177 ms

index.css

354 ms

base.css

185 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 95% of them (36 requests) were addressed to the original Dunet.co.jp, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Dunet.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 48.6 kB (12%)

Content Size

416.4 kB

After Optimization

367.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dunet.co.jp main page is 416.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. Images take 344.5 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 5.6 kB

  • Original 8.3 kB
  • After minification 7.3 kB
  • After compression 2.8 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 982 B, which is 12% 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 5.6 kB or 67% of the original size.

Image Optimization

-0%

Potential reduce by 6 B

  • Original 344.5 kB
  • After minification 344.5 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. D U NET images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 29.1 kB

  • Original 46.3 kB
  • After minification 46.3 kB
  • After compression 17.1 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 29.1 kB or 63% of the original size.

CSS Optimization

-80%

Potential reduce by 13.9 kB

  • Original 17.3 kB
  • After minification 11.6 kB
  • After compression 3.4 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. Dunet.co.jp needs all CSS files to be minified and compressed as it can save up to 13.9 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (33%)

Requests Now

36

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of D U NET. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dunet.co.jp

dunet.co.jp

439 ms

www.dunet.co.jp

www.dunet.co.jp

597 ms

import.css

import.css

177 ms

index.css

index.css

354 ms

base.css

base.css

185 ms

contents.css

contents.css

325 ms

ga.js

ga.js

47 ms

logo.png

logo.png

177 ms

hd-dhg.png

hd-dhg.png

181 ms

hd-option.png

hd-option.png

163 ms

hd-company.png

hd-company.png

324 ms

hd-news.png

hd-news.png

327 ms

hd-inquire.png

hd-inquire.png

351 ms

main.png

main.png

1246 ms

bg-optionService01.png

bg-optionService01.png

361 ms

tit-optionService01.png

tit-optionService01.png

360 ms

bg-optionService02.png

bg-optionService02.png

484 ms

img-optionService01.png

img-optionService01.png

489 ms

img-optionService02.png

img-optionService02.png

526 ms

img-optionService03.png

img-optionService03.png

539 ms

bg-optionService03.png

bg-optionService03.png

543 ms

img-optionService04.png

img-optionService04.png

644 ms

img-optionService05.png

img-optionService05.png

649 ms

img-optionService06.png

img-optionService06.png

700 ms

img-optionService07.png

img-optionService07.png

718 ms

txt-loginMenu01.png

txt-loginMenu01.png

719 ms

btn-loginMenu01.png

btn-loginMenu01.png

963 ms

txt-loginMenu02.png

txt-loginMenu02.png

811 ms

btn-loginMenu02.png

btn-loginMenu02.png

874 ms

tit-newsRelease01.png

tit-newsRelease01.png

896 ms

img-newsRelease01.png

img-newsRelease01.png

898 ms

bg-contents.png

bg-contents.png

973 ms

arrow.png

arrow.png

1050 ms

btn-companies.png

btn-companies.png

1075 ms

btn-mgt.png

btn-mgt.png

1077 ms

btn-liv.png

btn-liv.png

1122 ms

btn-est.png

btn-est.png

1135 ms

__utm.gif

__utm.gif

14 ms

Accessibility Review

dunet.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

Links do not have a discernible name

Tables and lists

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

Impact

Issue

High

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

dunet.co.jp best practices score

75

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

dunet.co.jp SEO score

89

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

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

High

Tap targets are not sized appropriately

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 Dunet.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 Dunet.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

dunet.co.jp

Open Graph description is not detected on the main page of D U NET. 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: