Tools & Wizards About Us

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

d-ucom.co.jp

ダスキンレントオール｜イベント用品レンタル備品機材・会場設営｜【ダスキンレントオール事業部】株式会社ユーコム

Page Load Speed

8.3 sec in total

First Response

589 ms

Resources Loaded

7.3 sec

Page Rendered

425 ms

About Website

Visit d-ucom.co.jp now to see the best up-to-date D Ucom content for Japan and also check out these interesting facts you probably never knew about d-ucom.co.jp

イベント用品や備品機材のレンタルからイベント会場設営・撤去、看板製作など、ユーコムのダスキンレントオール事業部ではダスキンのネットワークを生かし、東京都・埼玉県・神奈川県を中心に全国各地、対応しております。

Visit d-ucom.co.jp

Key Findings

We analyzed D-ucom.co.jp page load time and found that the first response time was 589 ms and then it took 7.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

d-ucom.co.jp performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

1/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value1,690 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.085

93/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

Network Requests Diagram

d-ucom.co.jp

589 ms

d-ucom.co.jp

1284 ms

style.css

525 ms

jquery.bxslider.css

527 ms

common.css

1116 ms

Our browser made a total of 158 requests to load all elements on the main page. We found that 90% of them (142 requests) were addressed to the original D-ucom.co.jp, 3% (4 requests) were made to Platform.twitter.com and 2% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain D-ucom.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 340.4 kB (22%)

Content Size

1.5 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of D-ucom.co.jp main page is 1.5 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. 70% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 58.9 kB

  • Original 73.8 kB
  • After minification 59.6 kB
  • After compression 14.9 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 14.2 kB, which is 19% 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 58.9 kB or 80% of the original size.

Image Optimization

-4%

Potential reduce by 44.9 kB

  • Original 1.2 MB
  • After minification 1.1 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. D Ucom images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 142.5 kB

  • Original 210.3 kB
  • After minification 165.1 kB
  • After compression 67.8 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 142.5 kB or 68% of the original size.

CSS Optimization

-95%

Potential reduce by 94.1 kB

  • Original 99.4 kB
  • After minification 19.1 kB
  • After compression 5.3 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. D-ucom.co.jp needs all CSS files to be minified and compressed as it can save up to 94.1 kB or 95% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (18%)

Requests Now

156

After Optimization

128

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 156 CSS, Javascripts, AJAX and image requests in order to completely render the main page of D Ucom. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

d-ucom.co.jp accessibility score

81

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

d-ucom.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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

d-ucom.co.jp SEO score

76

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 doesn't use 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 D-ucom.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 D-ucom.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 D Ucom. 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: