Tools & Wizards About Us

Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

duomusicexchange.com

duo MUSIC EXCHANGE オフィシャルサイト｜東京・渋谷

Page Load Speed

13.6 sec in total

First Response

751 ms

Resources Loaded

12.2 sec

Page Rendered

741 ms

About Website

Welcome to duomusicexchange.com homepage info - get ready to check Duo MUSIC EXCHANGE best content for Japan right away, or after learning these important things about duomusicexchange.com

東京渋谷・道玄坂のライブスペース「duo MUSIC EXCHANGE」オフィシャルサイト。

Visit duomusicexchange.com

Key Findings

We analyzed Duomusicexchange.com page load time and found that the first response time was 751 ms and then it took 12.9 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

duomusicexchange.com performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value11.3 s

0/100

25%

SI (Speed Index)

Value11.7 s

4/100

10%

TBT (Total Blocking Time)

Value340 ms

74/100

30%

CLS (Cumulative Layout Shift)

Value0.198

62/100

15%

TTI (Time to Interactive)

Value14.4 s

9/100

10%

Network Requests Diagram

duomusicexchange.com

751 ms

bootstrap.min.css

866 ms

styles.css

347 ms

css

64 ms

css

80 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 64% of them (36 requests) were addressed to the original Duomusicexchange.com, 11% (6 requests) were made to Fonts.gstatic.com and 5% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (10.5 sec) belongs to the original domain Duomusicexchange.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 502.6 kB (9%)

Content Size

5.6 MB

After Optimization

5.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Duomusicexchange.com main page is 5.6 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 5.0 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 18.9 kB

  • Original 24.4 kB
  • After minification 21.2 kB
  • After compression 5.5 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 3.2 kB, which is 13% 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 18.9 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 62.6 kB

  • Original 5.0 MB
  • After minification 5.0 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. Duo MUSIC EXCHANGE images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 176.9 kB

  • Original 285.1 kB
  • After minification 284.9 kB
  • After compression 108.2 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 176.9 kB or 62% of the original size.

CSS Optimization

-88%

Potential reduce by 244.1 kB

  • Original 276.7 kB
  • After minification 253.1 kB
  • After compression 32.6 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. Duomusicexchange.com needs all CSS files to be minified and compressed as it can save up to 244.1 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (38%)

Requests Now

48

After Optimization

30

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duo MUSIC EXCHANGE. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

duomusicexchange.com accessibility score

81

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

duomusicexchange.com 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

duomusicexchange.com SEO score

75

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

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 Duomusicexchange.com 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 Duomusicexchange.com 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 data is detected on the main page of Duo MUSIC EXCHANGE. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: