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denon.co.uk screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

denon.co.uk

It's time for an upgrade

Page Load Speed

3.7 sec in total

First Response

1.3 sec

Resources Loaded

2.1 sec

Page Rendered

300 ms

denon.co.uk screenshot

About Website

Visit denon.co.uk now to see the best up-to-date Denon content for United Kingdom and also check out these interesting facts you probably never knew about denon.co.uk

Unleash the true power of music, movies, sports, and gaming. Upgrade to home audio like you’ve never heard before.

Visit denon.co.uk

Key Findings

We analyzed Denon.co.uk page load time and found that the first response time was 1.3 sec and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster. This domain responded with an error, which can significantly jeopardize Denon.co.uk rating and web reputation

Performance Metrics

denon.co.uk performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value17.9 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value1,510 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.237

52/100

15%

TTI (Time to Interactive)

Value16.3 s

5/100

10%

Network Requests Diagram

uk

1295 ms

init.js

12 ms

ScriptResource.axd

39 ms

blank.js

9 ms

ScriptResource.axd

50 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 48% of them (42 requests) were addressed to the original Denon.co.uk, 42% (37 requests) were made to Assets.denon.com and 2% (2 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Denon.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (37%)

Content Size

3.9 MB

After Optimization

2.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Denon.co.uk main page is 3.9 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 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 115.1 kB

  • Original 153.3 kB
  • After minification 143.8 kB
  • After compression 38.3 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 115.1 kB or 75% of the original size.

Image Optimization

-19%

Potential reduce by 474.1 kB

  • Original 2.5 MB
  • After minification 2.1 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. Obviously, Denon needs image optimization as it can save up to 474.1 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 651.9 kB

  • Original 962.6 kB
  • After minification 931.4 kB
  • After compression 310.7 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 651.9 kB or 68% of the original size.

CSS Optimization

-84%

Potential reduce by 199.5 kB

  • Original 237.5 kB
  • After minification 191.8 kB
  • After compression 38.0 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. Denon.co.uk needs all CSS files to be minified and compressed as it can save up to 199.5 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (33%)

Requests Now

80

After Optimization

54

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 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 20 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

uk

uk

1295 ms

init.js

init.js

12 ms

ScriptResource.axd

ScriptResource.axd

39 ms

blank.js

blank.js

9 ms

ScriptResource.axd

ScriptResource.axd

50 ms

layout.css

layout.css

10 ms

layoutResponsive.css

layoutResponsive.css

23 ms

jquery-ui-1.10.4.css

jquery-ui-1.10.4.css

25 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

31 ms

jquery_002.js

jquery_002.js

25 ms

addthis_widget.js

addthis_widget.js

29 ms

WebResource.axd

WebResource.axd

84 ms

lightGallery.css

lightGallery.css

23 ms

search_rest.js

search_rest.js

24 ms

jquery_002.js

jquery_002.js

25 ms

lightGallery.min.js

lightGallery.min.js

25 ms

home_slider.css

home_slider.css

248 ms

cookie.js

cookie.js

9 ms

jquery.masonry.min.js

jquery.masonry.min.js

8 ms

conversion.js

conversion.js

65 ms

jquery.dd.js

jquery.dd.js

13 ms

easing.js.min.js

easing.js.min.js

23 ms

custom.js

custom.js

65 ms

dd.css

dd.css

39 ms

form.css

form.css

47 ms

extra.css

extra.css

41 ms

Amplifiers_SubCategory.png

Amplifiers_SubCategory.png

192 ms

EL_avrx5200w_e2_b_fr_cl.jpg

EL_avrx5200w_e2_b_fr_cl.jpg

193 ms

Desktop%20Music%20Systems.png

Desktop%20Music%20Systems.png

191 ms

Bluetooth-Speakers.png

Bluetooth-Speakers.png

189 ms

Sports.png

Sports.png

190 ms

NetworkMusicSystems.png

NetworkMusicSystems.png

189 ms

EL_dhts514_e2_e3_fr.png

EL_dhts514_e2_e3_fr.png

195 ms

Auro_3d_Cat.png

Auro_3d_Cat.png

196 ms

Blu-ray-Players.png

Blu-ray-Players.png

195 ms

SACDCD-Players.png

SACDCD-Players.png

195 ms

EL_dnp730ae_e2_bk_fr.jpg

EL_dnp730ae_e2_bk_fr.jpg

194 ms

USB-DA.png

USB-DA.png

197 ms

Turntable.png

Turntable.png

200 ms

Loudspeakers_SubCategory.png

Loudspeakers_SubCategory.png

199 ms

Mini_Micro.png

Mini_Micro.png

196 ms

Music_Maniac_AH-MM300-cover.png

Music_Maniac_AH-MM300-cover.png

200 ms

Travel.png

Travel.png

200 ms

Denon-AH-MM400-cover.png

Denon-AH-MM400-cover.png

201 ms

blank28x9.png

blank28x9.png

201 ms

New%20Adaptor%20UK.jpg

New%20Adaptor%20UK.jpg

203 ms

X200.png

X200.png

204 ms

HOESLink_310x260_EN.jpg

HOESLink_310x260_EN.jpg

205 ms

DM40.png

DM40.png

210 ms

150904_GC_HomeCallOut_310x260_Fixed.png

150904_GC_HomeCallOut_310x260_Fixed.png

207 ms

Denon_Design-Series_310x260.png

Denon_Design-Series_310x260.png

210 ms

Denon_Support_Full_Fixed.jpg

Denon_Support_Full_Fixed.jpg

206 ms

Denon_DealorLocator_Full_Fixed.jpg

Denon_DealorLocator_Full_Fixed.jpg

212 ms

heos%207%20tr_150216052915.png

heos%207%20tr_150216052915.png

216 ms

homecinema%20and%20avf_120216104550.png

homecinema%20and%20avf_120216104550.png

212 ms

ceol%20tr_120216103117.png

ceol%20tr_120216103117.png

216 ms

DTS%20X.jpg

DTS%20X.jpg

213 ms

What%20Hi%20Fi%20Awards%202015.JPG

What%20Hi%20Fi%20Awards%202015.JPG

217 ms

social_Facebook.png

social_Facebook.png

213 ms

social_Twitter.png

social_Twitter.png

218 ms

social_YouTube.png

social_YouTube.png

217 ms

icon_onlineMusicServices.png

icon_onlineMusicServices.png

218 ms

spcommon.png

spcommon.png

9 ms

newCallOutBlank.png

newCallOutBlank.png

11 ms

bookmarkIcon.png

bookmarkIcon.png

12 ms

arrowTop.png

arrowTop.png

12 ms

logo.jpg

logo.jpg

125 ms

sprite.png

sprite.png

121 ms

progress.gif

progress.gif

124 ms

Home-page-scroll.png

Home-page-scroll.png

122 ms

home-bg.jpg

home-bg.jpg

120 ms

text-bg.png

text-bg.png

96 ms

flagssprite_small.png

flagssprite_small.png

97 ms

analytics.js

analytics.js

22 ms

29E682_1_0.woff

29E682_1_0.woff

102 ms

29E682_2_0.woff

29E682_2_0.woff

103 ms

29E682_3_0.woff

29E682_3_0.woff

100 ms

29E682_0_0.woff

29E682_0_0.woff

102 ms

collect

collect

80 ms

collect

collect

304 ms

297 ms

HEOS_UK_1400x450.png

HEOS_UK_1400x450.png

235 ms

29E682_5_0.woff

29E682_5_0.woff

216 ms

300lo.json

300lo.json

49 ms

sh.7c7179124ea24ac6ba46caac.html

sh.7c7179124ea24ac6ba46caac.html

31 ms

42 ms

layoutPrint.css

layoutPrint.css

8 ms

initstrings.js

initstrings.js

36 ms

Accessibility Review

denon.co.uk accessibility score

82

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

[role] values are not valid

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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.

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

denon.co.uk best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

denon.co.uk SEO score

91

Search Engine Optimization Advices

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 Denon.co.uk 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 Denon.co.uk 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

denon.co.uk

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