Tools & Wizards About Us
alcosense.co.uk screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

alcosense.co.uk

Breathalyzer and Home Alcohol Testers // AlcoSense Breathalysers

Page Load Speed

2.6 sec in total

First Response

99 ms

Resources Loaded

2.1 sec

Page Rendered

381 ms

alcosense.co.uk screenshot

About Website

Welcome to alcosense.co.uk homepage info - get ready to check Alco Sense best content for United Kingdom right away, or after learning these important things about alcosense.co.uk

Breathalyzer from AlcoSense. What Car? Best Breathalyzer under £100 and £40, Auto Express Best Buy Breathalyzer 2018, Fifth Gear Group Test Winner.

Visit alcosense.co.uk

Key Findings

We analyzed Alcosense.co.uk page load time and found that the first response time was 99 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

alcosense.co.uk performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value19.8 s

0/100

25%

SI (Speed Index)

Value12.1 s

3/100

10%

TBT (Total Blocking Time)

Value2,440 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.125

83/100

15%

TTI (Time to Interactive)

Value17.4 s

4/100

10%

Network Requests Diagram

alcosense.co.uk

99 ms

alcosense.co.uk

639 ms

jquery.treeview.css

32 ms

menu.css

31 ms

menu_blue.css

31 ms

Our browser made a total of 160 requests to load all elements on the main page. We found that 81% of them (129 requests) were addressed to the original Alcosense.co.uk, 4% (7 requests) were made to Google.com and 3% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (799 ms) belongs to the original domain Alcosense.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 579.2 kB (26%)

Content Size

2.2 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Alcosense.co.uk main page is 2.2 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. Only a small number of websites need less resources to load. Javascripts take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 86.5 kB

  • Original 106.7 kB
  • After minification 105.3 kB
  • After compression 20.3 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 86.5 kB or 81% of the original size.

Image Optimization

-19%

Potential reduce by 178.9 kB

  • Original 963.6 kB
  • After minification 784.6 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. Obviously, Alco Sense needs image optimization as it can save up to 178.9 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

-26%

Potential reduce by 283.8 kB

  • Original 1.1 MB
  • After minification 1.1 MB
  • After compression 798.0 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 283.8 kB or 26% of the original size.

CSS Optimization

-37%

Potential reduce by 30.0 kB

  • Original 80.4 kB
  • After minification 80.4 kB
  • After compression 50.4 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. Alcosense.co.uk needs all CSS files to be minified and compressed as it can save up to 30.0 kB or 37% of the original size.

Requests Breakdown

Number of requests can be reduced by 98 (65%)

Requests Now

151

After Optimization

53

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 151 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alco Sense. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 71 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

alcosense.co.uk

alcosense.co.uk

99 ms

alcosense.co.uk

alcosense.co.uk

639 ms

jquery.treeview.css

jquery.treeview.css

32 ms

menu.css

menu.css

31 ms

menu_blue.css

menu_blue.css

31 ms

menu_white.css

menu_white.css

32 ms

menu_responsive_all_view.css

menu_responsive_all_view.css

29 ms

modal.css

modal.css

48 ms

owl.carousel.css

owl.carousel.css

42 ms

owl.theme.default.css

owl.theme.default.css

46 ms

sagePaySuite.css

sagePaySuite.css

48 ms

algoliasearch.css

algoliasearch.css

42 ms

settings.css

settings.css

54 ms

menu_notresponsivepart.css

menu_notresponsivepart.css

59 ms

prototype.js

prototype.js

53 ms

ccard.js

ccard.js

69 ms

validation.js

validation.js

68 ms

builder.js

builder.js

71 ms

effects.js

effects.js

73 ms

dragdrop.js

dragdrop.js

77 ms

controls.js

controls.js

72 ms

slider.js

slider.js

79 ms

js.js

js.js

82 ms

form.js

form.js

80 ms

translate.js

translate.js

86 ms

cookies.js

cookies.js

80 ms

tooltip.js

tooltip.js

84 ms

campaignCatcher.js

campaignCatcher.js

83 ms

iwd-jquery-2.1.3.min.js

iwd-jquery-2.1.3.min.js

86 ms

modal.js

modal.js

98 ms

jquery.min.js

jquery.min.js

99 ms

underscore.js

underscore.js

112 ms

backbone.js

backbone.js

116 ms

mobile-detect.min.js

mobile-detect.min.js

118 ms

dropdown.js

dropdown.js

122 ms

Function.prototype.bind.js

Function.prototype.bind.js

123 ms

algoliaBundle.min.js

algoliaBundle.min.js

126 ms

8b65abfc243b0fb642aa57900.js

8b65abfc243b0fb642aa57900.js

122 ms

2f44eae26c7ec1a9de839ab323bf82c0.js

2f44eae26c7ec1a9de839ab323bf82c0.js

477 ms

tp.widget.sync.bootstrap.min.js

tp.widget.sync.bootstrap.min.js

26 ms

css

css

43 ms

styles.css

styles.css

100 ms

madisonisland.css

madisonisland.css

177 ms

common.js

common.js

176 ms

autocomplete.js

autocomplete.js

177 ms

jquery-1.11.0.min.js

jquery-1.11.0.min.js

180 ms

jquery-migrate-1.2.1.min.js

jquery-migrate-1.2.1.min.js

180 ms

jquery.noconflict.js

jquery.noconflict.js

181 ms

modernizr.custom.min.js

modernizr.custom.min.js

165 ms

selectivizr.js

selectivizr.js

183 ms

matchMedia.js

matchMedia.js

180 ms

matchMedia.addListener.js

matchMedia.addListener.js

184 ms

enquire.js

enquire.js

182 ms

app.js

app.js

170 ms

jquery.cycle2.min.js

jquery.cycle2.min.js

169 ms

jquery.cycle2.swipe.min.js

jquery.cycle2.swipe.min.js

175 ms

slideshow.js

slideshow.js

173 ms

imagesloaded.js

imagesloaded.js

172 ms

minicart.js

minicart.js

170 ms

jquery.js

jquery.js

169 ms

noconflict.js

noconflict.js

178 ms

jquery.simplemodal.js

jquery.simplemodal.js

176 ms

owl.carousel.js

owl.carousel.js

178 ms

theme.js

theme.js

175 ms

jquery.themepunch.tools.min.js

jquery.themepunch.tools.min.js

177 ms

jquery.themepunch.revolution.min.js

jquery.themepunch.revolution.min.js

198 ms

require_jquery_gdpr_v1.js

require_jquery_gdpr_v1.js

196 ms

performance.js

performance.js

184 ms

jquery.min.js

jquery.min.js

22 ms

menu_responsive.css

menu_responsive.css

12 ms

analytics.js

analytics.js

17 ms

collect

collect

13 ms

tp.widget.bootstrap.min.js

tp.widget.bootstrap.min.js

17 ms

gtm.js

gtm.js

227 ms

hotjar-670320.js

hotjar-670320.js

221 ms

dib.png

dib.png

298 ms

alc-logo.jpg

alc-logo.jpg

220 ms

icon-phone-mobile.png

icon-phone-mobile.png

297 ms

icon-search.png

icon-search.png

297 ms

auto-express-bestbuy-2022-menu.png

auto-express-bestbuy-2022-menu.png

19 ms

auto-express-recommended-2022-menu.png

auto-express-recommended-2022-menu.png

19 ms

g-d-a-2018-pl-menu4_1.png

g-d-a-2018-pl-menu4_1.png

39 ms

r-d-a-pl-menu3_1.png

r-d-a-pl-menu3_1.png

38 ms

auto-express-hot-kit.png

auto-express-hot-kit.png

86 ms

Evo_AlcoSense_Excel_winner-menu2.png

Evo_AlcoSense_Excel_winner-menu2.png

86 ms

slide1.jpg

slide1.jpg

215 ms

slide1-gda.png

slide1-gda.png

215 ms

bb2022.png

bb2022.png

247 ms

slide-2.jpg

slide-2.jpg

247 ms

slide2-telegraph.png

slide2-telegraph.png

295 ms

transparent.png

transparent.png

527 ms

slide3-bg.jpg

slide3-bg.jpg

293 ms

slide4-bg.jpg

slide4-bg.jpg

309 ms

gda.png

gda.png

308 ms

alcosense_excel_award-homepage-2.jpg

alcosense_excel_award-homepage-2.jpg

309 ms

Evo_AlcoSense_Excel_winner-122px.gif

Evo_AlcoSense_Excel_winner-122px.gif

307 ms

alcosense-lite-2-ae-main5_1.png

alcosense-lite-2-ae-main5_1.png

307 ms

alcosense-elite-3-semi-conductor-breathalyzer-auto-express-2022-3.jpg

alcosense-elite-3-semi-conductor-breathalyzer-auto-express-2022-3.jpg

344 ms

alcosense-excel-evo-ae-2022.jpg

alcosense-excel-evo-ae-2022.jpg

360 ms

alcosense-pro-breathalyzer-main-22.png

alcosense-pro-breathalyzer-main-22.png

344 ms

SingleUse_icon_80d1ee.png

SingleUse_icon_80d1ee.png

343 ms

electronicB-icon-80d1ee.png

electronicB-icon-80d1ee.png

342 ms

ACC_blowpipes_icon-80d1ee.png

ACC_blowpipes_icon-80d1ee.png

358 ms

Svc_Calib_icon-80d1ee.png

Svc_Calib_icon-80d1ee.png

358 ms

0004-1-masked.png

0004-1-masked.png

359 ms

promo-1a-2022-2.png

promo-1a-2022-2.png

359 ms

halfords-logo.png

halfords-logo.png

371 ms

boots-logo.png

boots-logo.png

370 ms

amazon-logo.png

amazon-logo.png

369 ms

greenham-logo-327-x-63.png

greenham-logo-327-x-63.png

369 ms

cef-logo.png

cef-logo.png

369 ms

js

js

286 ms

sdk.js

sdk.js

206 ms

17219056381103219197.jpg

17219056381103219197.jpg

368 ms

6xK3dSBYKcSV-LCoeQqfX1RYOo3qNq7g.ttf

6xK3dSBYKcSV-LCoeQqfX1RYOo3qNq7g.ttf

230 ms

6xKydSBYKcSV-LCoeQqfX1RYOo3i94_wmRdr.ttf

6xKydSBYKcSV-LCoeQqfX1RYOo3i94_wmRdr.ttf

276 ms

6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwmRdr.ttf

6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwmRdr.ttf

290 ms

6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmRdr.ttf

6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwmRdr.ttf

326 ms

1721906710432296287.jpg

1721906710432296287.jpg

367 ms

FuturaPT-Medium.otf

FuturaPT-Medium.otf

350 ms

FuturaPT-Demi.otf

FuturaPT-Demi.otf

799 ms

FuturaPT-Light.otf

FuturaPT-Light.otf

610 ms

17016914841579012649.jpg

17016914841579012649.jpg

319 ms

bat.js

bat.js

223 ms

fbevents.js

fbevents.js

158 ms

revolution.extension.slideanims.min.js

revolution.extension.slideanims.min.js

187 ms

revolution.extension.actions.min.js

revolution.extension.actions.min.js

187 ms

revolution.extension.layeranimation.min.js

revolution.extension.layeranimation.min.js

194 ms

sdk.js

sdk.js

90 ms

revolution.extension.navigation.min.js

revolution.extension.navigation.min.js

167 ms

1-gda-18-ho-winner-ng.png

1-gda-18-ho-winner-ng.png

168 ms

2-pd-2016-rd-design.png

2-pd-2016-rd-design.png

142 ms

ae-bb-22-footer-uk.jpg

ae-bb-22-footer-uk.jpg

141 ms

4-innovation-2018-winner.png

4-innovation-2018-winner.png

141 ms

5-the-sunday-times.png

5-the-sunday-times.png

146 ms

m=bootstrap

m=bootstrap

60 ms

fifth-gear.png

fifth-gear.png

131 ms

nat-biz-award.png

nat-biz-award.png

132 ms

whatsapp.png

whatsapp.png

133 ms

icon-phone.png

icon-phone.png

387 ms

flag-ukie.png

flag-ukie.png

386 ms

icon-arrow-dn.png

icon-arrow-dn.png

383 ms

22014519.js

22014519.js

38 ms

61 ms

icon-cart.png

icon-cart.png

458 ms

bkg-rating.png

bkg-rating.png

591 ms

arrow-more.png

arrow-more.png

591 ms

icon-clock.png

icon-clock.png

582 ms

icon-phone-small.png

icon-phone-small.png

576 ms

api.js

api.js

34 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

7 ms

proxy

proxy

95 ms

coloredbg.png

coloredbg.png

277 ms

loader.gif

loader.gif

278 ms

m=_b,_tp

m=_b,_tp

9 ms

js

js

40 ms

m=pBXhlf

m=pBXhlf

46 ms

m=Wt6vjf,hhhU8,FCpbqb,WhJNk

m=Wt6vjf,hhhU8,FCpbqb,WhJNk

43 ms

m=lwddkf,EFQ78c

m=lwddkf,EFQ78c

59 ms

m=RqjULd

m=RqjULd

18 ms

Accessibility Review

alcosense.co.uk accessibility score

88

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.

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

alcosense.co.uk 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

alcosense.co.uk SEO score

76

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

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 Alcosense.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 Alcosense.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

alcosense.co.uk

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