Report Summary

  • 38

    Performance

    Renders faster than
    58% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    18% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

nihon-onkyo.co.jp

日本音響株式会社

Page Load Speed

11.7 sec in total

First Response

1.3 sec

Resources Loaded

9.9 sec

Page Rendered

541 ms

nihon-onkyo.co.jp screenshot

About Website

Visit nihon-onkyo.co.jp now to see the best up-to-date Nihon Onkyo content for Japan and also check out these interesting facts you probably never knew about nihon-onkyo.co.jp

業務用音響、照明機器の取扱いを主体にオリジナル商品の開発、システムの設計施工、各種機器の販売、買取修理等を行っています。音響/照明機器の「最後の砦」に相応しくアフターサービスも万全です。是非困ったときの最後の拠り所にして下さい。

Visit nihon-onkyo.co.jp

Key Findings

We analyzed Nihon-onkyo.co.jp page load time and found that the first response time was 1.3 sec and then it took 10.4 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

nihon-onkyo.co.jp performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value24.4 s

0/100

25%

SI (Speed Index)

Value9.5 s

11/100

10%

TBT (Total Blocking Time)

Value610 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0.114

86/100

15%

TTI (Time to Interactive)

Value5.5 s

70/100

10%

Network Requests Diagram

nihon-onkyo.co.jp

1303 ms

home.css

759 ms

skitter.styles.min.css

379 ms

jquery-1.7.min.js

738 ms

jquery.easing.1.3.js

256 ms

Our browser made a total of 148 requests to load all elements on the main page. We found that 99% of them (146 requests) were addressed to the original Nihon-onkyo.co.jp, 1% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (3.7 sec) belongs to the original domain Nihon-onkyo.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 465.4 kB (11%)

Content Size

4.4 MB

After Optimization

3.9 MB

In fact, the total size of Nihon-onkyo.co.jp main page is 4.4 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 4.0 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 57.3 kB

  • Original 65.1 kB
  • After minification 57.9 kB
  • After compression 7.8 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 7.3 kB, which is 11% 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 57.3 kB or 88% of the original size.

Image Optimization

-4%

Potential reduce by 167.4 kB

  • Original 4.0 MB
  • After minification 3.8 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. Nihon Onkyo images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 179.4 kB

  • Original 258.7 kB
  • After minification 252.2 kB
  • After compression 79.3 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 179.4 kB or 69% of the original size.

CSS Optimization

-87%

Potential reduce by 61.3 kB

  • Original 70.3 kB
  • After minification 58.1 kB
  • After compression 9.1 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. Nihon-onkyo.co.jp needs all CSS files to be minified and compressed as it can save up to 61.3 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (11%)

Requests Now

145

After Optimization

129

The browser has sent 145 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nihon Onkyo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

nihon-onkyo.co.jp accessibility score

78

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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

Best Practices

nihon-onkyo.co.jp best practices score

50

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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

nihon-onkyo.co.jp SEO score

58

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

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nihon-onkyo.co.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nihon-onkyo.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 Nihon Onkyo. 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: