Report Summary

  • 19

    Performance

    Renders faster than
    35% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

firmware.denon.eu

Denon™ Home Theater | Enhance the Entertainment Experience

Page Load Speed

7.1 sec in total

First Response

1.5 sec

Resources Loaded

4.9 sec

Page Rendered

660 ms

firmware.denon.eu screenshot

About Website

Click here to check amazing Firmware Denon content for Germany. Otherwise, check out these important facts you probably never knew about firmware.denon.eu

Every detail of a Denon audio product is crafted with a single goal in mind: to enhance the entertainment experience. Build your home theater here.

Visit firmware.denon.eu

Key Findings

We analyzed Firmware.denon.eu page load time and found that the first response time was 1.5 sec and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

firmware.denon.eu performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value32.1 s

0/100

25%

SI (Speed Index)

Value23.0 s

0/100

10%

TBT (Total Blocking Time)

Value7,780 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.058

98/100

15%

TTI (Time to Interactive)

Value33.8 s

0/100

10%

Network Requests Diagram

1493 ms

optimize.js

55 ms

jquery.min.js

110 ms

entry.js

185 ms

bv.js

326 ms

Our browser made a total of 163 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Firmware.denon.eu, 20% (32 requests) were made to S.amazon-adsystem.com and 4% (6 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Denon.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 215.3 kB (42%)

Content Size

517.7 kB

After Optimization

302.4 kB

In fact, the total size of Firmware.denon.eu main page is 517.7 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. Only a small number of websites need less resources to load. Javascripts take 339.4 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 92.1 kB

  • Original 116.1 kB
  • After minification 110.5 kB
  • After compression 24.0 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 92.1 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 346 B

  • Original 53.7 kB
  • After minification 53.4 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. Firmware Denon images are well optimized though.

JavaScript Optimization

-36%

Potential reduce by 122.9 kB

  • Original 339.4 kB
  • After minification 339.4 kB
  • After compression 216.6 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 122.9 kB or 36% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 8.4 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.

Requests Breakdown

Number of requests can be reduced by 106 (72%)

Requests Now

148

After Optimization

42

The browser has sent 148 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Firmware Denon. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 56 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

firmware.denon.eu accessibility score

90

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.

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 IDs are not unique

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

firmware.denon.eu 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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

firmware.denon.eu SEO score

84

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

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Firmware.denon.eu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Firmware.denon.eu 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 Firmware Denon. 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: