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d3av.co.uk screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    48% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

d3av.co.uk

Audio Visual Scotland | Audio Visual Installation & AV Solutions

Page Load Speed

7.6 sec in total

First Response

253 ms

Resources Loaded

3 sec

Page Rendered

4.4 sec

d3av.co.uk screenshot

About Website

Welcome to d3av.co.uk homepage info - get ready to check D3 AV best content right away, or after learning these important things about d3av.co.uk

d3 Audio and Visual are professional engineers providing the best AV solutions and installations throughout Scotland and the UK. Get in touch to learn more.

Visit d3av.co.uk

Key Findings

We analyzed D3av.co.uk page load time and found that the first response time was 253 ms and then it took 7.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

d3av.co.uk performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value17.4 s

0/100

25%

SI (Speed Index)

Value6.2 s

44/100

10%

TBT (Total Blocking Time)

Value1,400 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.143

78/100

15%

TTI (Time to Interactive)

Value9.8 s

28/100

10%

Network Requests Diagram

d3av.co.uk

253 ms

www.d3av.co.uk

201 ms

www.d3av.co.uk

434 ms

bootstrap.min.css

87 ms

custom.css

169 ms

Our browser made a total of 102 requests to load all elements on the main page. We found that 75% of them (77 requests) were addressed to the original D3av.co.uk, 5% (5 requests) were made to I.vimeocdn.com and 4% (4 requests) were made to F.vimeocdn.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain D3av.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 289.0 kB (9%)

Content Size

3.1 MB

After Optimization

2.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of D3av.co.uk main page is 3.1 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. 70% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 42.5 kB

  • Original 52.9 kB
  • After minification 45.3 kB
  • After compression 10.4 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 7.6 kB, which is 14% 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 42.5 kB or 80% of the original size.

Image Optimization

-7%

Potential reduce by 198.2 kB

  • Original 2.9 MB
  • After minification 2.7 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. D3 AV images are well optimized though.

JavaScript Optimization

-41%

Potential reduce by 45.5 kB

  • Original 109.7 kB
  • After minification 86.3 kB
  • After compression 64.2 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 45.5 kB or 41% of the original size.

CSS Optimization

-5%

Potential reduce by 2.8 kB

  • Original 57.7 kB
  • After minification 57.7 kB
  • After compression 54.8 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. D3av.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 25 (27%)

Requests Now

94

After Optimization

69

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 94 CSS, Javascripts, AJAX and image requests in order to completely render the main page of D3 AV. 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 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

d3av.co.uk

d3av.co.uk

253 ms

www.d3av.co.uk

www.d3av.co.uk

201 ms

www.d3av.co.uk

www.d3av.co.uk

434 ms

bootstrap.min.css

bootstrap.min.css

87 ms

custom.css

custom.css

169 ms

media.css

media.css

245 ms

67239.js

67239.js

95 ms

ajaxCookie.php

ajaxCookie.php

281 ms

common.js

common.js

242 ms

jquery.min.js

jquery.min.js

34 ms

jquery.bxslider.js

jquery.bxslider.js

281 ms

function.js

function.js

281 ms

api.js

api.js

43 ms

gtm.js

gtm.js

144 ms

logo.png

logo.png

180 ms

manchester_united_audio_visual_strategy.jpg

manchester_united_audio_visual_strategy.jpg

1182 ms

central_church_audio_visual_strategy.jpg

central_church_audio_visual_strategy.jpg

1018 ms

silverstone_audio_visual_strategy.jpg

silverstone_audio_visual_strategy.jpg

844 ms

service-iconbg.jpg

service-iconbg.jpg

179 ms

define_icon.png

define_icon.png

177 ms

design_icon.png

design_icon.png

251 ms

d3mockv2.png

d3mockv2.png

250 ms

maintaince_icon.png

maintaince_icon.png

249 ms

consultancy_icon.png

consultancy_icon.png

345 ms

logo2.png

logo2.png

435 ms

logo4.png

logo4.png

435 ms

logo1.png

logo1.png

440 ms

logo3.png

logo3.png

837 ms

ctouch.png

ctouch.png

837 ms

d-and-b-audiotechnik.png

d-and-b-audiotechnik.png

838 ms

epson.png

epson.png

1011 ms

lacoustics.png

lacoustics.png

1007 ms

lifesize.png

lifesize.png

1006 ms

polycom.png

polycom.png

1003 ms

promethean-world.png

promethean-world.png

1172 ms

samsung.png

samsung.png

1169 ms

canon.png

canon.png

1171 ms

loxonelogo_partnersilver2019.jpg

loxonelogo_partnersilver2019.jpg

1287 ms

allen--heath-logo.png

allen--heath-logo.png

1170 ms

apart-logo.jpg

apart-logo.jpg

1256 ms

audio-technica.png

audio-technica.png

1258 ms

blackmagic-logo.jpg

blackmagic-logo.jpg

1260 ms

db-audio.png

db-audio.png

1256 ms

datavideo-logo.jpg

datavideo-logo.jpg

1257 ms

dpa-logo.png

dpa-logo.png

1288 ms

ev-logo.png

ev-logo.png

1285 ms

563266682

563266682

322 ms

565614232

565614232

239 ms

560473368

560473368

216 ms

extron-logo.png

extron-logo.png

1273 ms

furman.jpeg

furman.jpeg

1274 ms

kramer-logo.png

kramer-logo.png

1271 ms

l-acoustics.jpg

l-acoustics.jpg

1281 ms

Montserrat-Regular.woff

Montserrat-Regular.woff

1186 ms

OpenSans.woff

OpenSans.woff

1240 ms

analytics.js

analytics.js

131 ms

Montserrat-Bold.woff

Montserrat-Bold.woff

1204 ms

1158570144-6bae372843724ed1f696cd6560b0043eb35133d0b7e0f16aae961ace9f29b9e2-d.jpg

1158570144-6bae372843724ed1f696cd6560b0043eb35133d0b7e0f16aae961ace9f29b9e2-d.jpg

239 ms

player.js

player.js

318 ms

player.css

player.css

237 ms

vuid.min.js

vuid.min.js

306 ms

lg-logo.jpg

lg-logo.jpg

1113 ms

loxone-logo.jpg

loxone-logo.jpg

1169 ms

philips-logo.png

philips-logo.png

1235 ms

1169545711-406598ad0e75de286499e30abc2037fc5012d97c524398b94031122fa9374e5b-d.jpg

1169545711-406598ad0e75de286499e30abc2037fc5012d97c524398b94031122fa9374e5b-d.jpg

294 ms

1164479398-eb8a7b310e0cc4d8f71772c727a62ddbf645a4939b09f07dc6e83b6a92cdeedd-d.jpg

1164479398-eb8a7b310e0cc4d8f71772c727a62ddbf645a4939b09f07dc6e83b6a92cdeedd-d.jpg

213 ms

ptz-optics-logo.jpg

ptz-optics-logo.jpg

1260 ms

recaptcha__en.js

recaptcha__en.js

488 ms

collect

collect

172 ms

qsc-logo.jpg

qsc-logo.jpg

1115 ms

sennheiser-logo.png

sennheiser-logo.png

1059 ms

shure-logo.jpg

shure-logo.jpg

1056 ms

1164479398-eb8a7b310e0cc4d8f71772c727a62ddbf645a4939b09f07dc6e83b6a92cdeedd-d

1164479398-eb8a7b310e0cc4d8f71772c727a62ddbf645a4939b09f07dc6e83b6a92cdeedd-d

764 ms

soundcraft-logo.jpg

soundcraft-logo.jpg

677 ms

van_damme_logo.png

van_damme_logo.png

709 ms

yamaha-logo.png

yamaha-logo.png

708 ms

stampofapproval.png

stampofapproval.png

540 ms

1158570144-6bae372843724ed1f696cd6560b0043eb35133d0b7e0f16aae961ace9f29b9e2-d

1158570144-6bae372843724ed1f696cd6560b0043eb35133d0b7e0f16aae961ace9f29b9e2-d

719 ms

logo2.png

logo2.png

578 ms

logo3.png

logo3.png

661 ms

logo4.png

logo4.png

661 ms

logo5.png

logo5.png

659 ms

menu-border.jpg

menu-border.jpg

494 ms

menu-arrow-icon.png

menu-arrow-icon.png

498 ms

phone-icon.png

phone-icon.png

519 ms

menu-border2.jpg

menu-border2.jpg

577 ms

lastmenu-leftbg.png

lastmenu-leftbg.png

575 ms

footer-formbg.jpg

footer-formbg.jpg

554 ms

select-arrow.png

select-arrow.png

490 ms

phone-icon2.png

phone-icon2.png

489 ms

message-icon.png

message-icon.png

502 ms

social-icon.png

social-icon.png

575 ms

fallback

fallback

24 ms

bg_blc_transparent.png

bg_blc_transparent.png

549 ms

slider-left-arrow.png

slider-left-arrow.png

545 ms

slider-right-arrow.png

slider-right-arrow.png

545 ms

fallback__ltr.css

fallback__ltr.css

4 ms

css

css

96 ms

logo_48.png

logo_48.png

79 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

88 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

126 ms

sentry.js

sentry.js

42 ms

Accessibility Review

d3av.co.uk accessibility score

72

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

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

d3av.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

SEO Factors

d3av.co.uk SEO score

77

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

High

robots.txt is not valid

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise D3av.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 D3av.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

d3av.co.uk

Open Graph description is not detected on the main page of D3 AV. 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: