Tools & Wizards About Us

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

diskunion.net

ディスクユニオン｜レコード・CD・DVD・音楽ソフトの通販・買取

Page Load Speed

13 sec in total

First Response

1.1 sec

Resources Loaded

11 sec

Page Rendered

862 ms

About Website

Visit diskunion.net now to see the best up-to-date Diskunion content for Japan and also check out these interesting facts you probably never knew about diskunion.net

ディスクユニオンはCD・レコード・DVD・Blu-ray・本など音楽ソフトを豊富に取り扱うネット通販サイト。5,000円 (税込) 以上買うと送料無料！ 新品でも中古品でもOK！邦楽、洋楽、ロック、ジャズ、J-POP、インディーズ、メタル、パンク、クラシック、ヒップホップ、ソウル、ワールドミュージック、クラブミュージックの新譜や予約、お買い得なセール品も取り扱い中。売るときは買取57年以上の中古査...

Visit diskunion.net

Key Findings

We analyzed Diskunion.net page load time and found that the first response time was 1.1 sec and then it took 11.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

diskunion.net performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value20.1 s

0/100

25%

SI (Speed Index)

Value20.1 s

0/100

10%

TBT (Total Blocking Time)

Value1,360 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.185

66/100

15%

TTI (Time to Interactive)

Value21.8 s

1/100

10%

Network Requests Diagram

diskunion.net

1130 ms

diskunion.net

1991 ms

notosansjp.css

34 ms

css

51 ms

reset.css

552 ms

Our browser made a total of 241 requests to load all elements on the main page. We found that 19% of them (45 requests) were addressed to the original Diskunion.net, 70% (169 requests) were made to St.diskunion.net and 5% (11 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (3.3 sec) belongs to the original domain Diskunion.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 398.8 kB (6%)

Content Size

6.9 MB

After Optimization

6.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Diskunion.net main page is 6.9 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 6.6 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 156.1 kB

  • Original 178.6 kB
  • After minification 137.2 kB
  • After compression 22.5 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 41.4 kB, which is 23% 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 156.1 kB or 87% of the original size.

Image Optimization

-4%

Potential reduce by 232.2 kB

  • Original 6.6 MB
  • After minification 6.3 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. Diskunion images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 2.9 kB

  • Original 80.3 kB
  • After minification 80.3 kB
  • After compression 77.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-14%

Potential reduce by 7.5 kB

  • Original 54.7 kB
  • After minification 54.7 kB
  • After compression 47.1 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. Diskunion.net needs all CSS files to be minified and compressed as it can save up to 7.5 kB or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 33 (15%)

Requests Now

222

After Optimization

189

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 222 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Diskunion. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

diskunion.net accessibility score

85

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

Image elements do not have [alt] attributes

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>).

Best Practices

diskunion.net 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

diskunion.net SEO score

85

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

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 Diskunion.net 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 Diskunion.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

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