Tools & Wizards About Us
cdvi.co.uk screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    60% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

cdvi.co.uk

Access Control Solutions Manufacturer - CDVI UK

Page Load Speed

4.1 sec in total

First Response

1.4 sec

Resources Loaded

2.5 sec

Page Rendered

178 ms

cdvi.co.uk screenshot

About Website

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

Flexible access control and security solutions for residential, commercial, and public buildings. Discover our products now!

Visit cdvi.co.uk

Key Findings

We analyzed Cdvi.co.uk page load time and found that the first response time was 1.4 sec and then it took 2.7 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

cdvi.co.uk performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value18.7 s

0/100

25%

SI (Speed Index)

Value6.0 s

47/100

10%

TBT (Total Blocking Time)

Value220 ms

87/100

30%

CLS (Cumulative Layout Shift)

Value0.418

23/100

15%

TTI (Time to Interactive)

Value9.4 s

31/100

10%

Network Requests Diagram

cdvi.co.uk

1423 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

160 ms

css_Y-mYd1d5mC_zGM0jeoocZs9JOily-y7rYJ69qLaq9lE.css

173 ms

css_AImD2nKZ9ABMgkG_JMfmkRqFGqxL7D09jwiIdP9dZxo.css

166 ms

css_4sViengKynXKmM6oUFLa3XDzyGFDCxyni9aci9tmdqU.css

255 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 69% of them (27 requests) were addressed to the original Cdvi.co.uk, 13% (5 requests) were made to Fonts.gstatic.com and 8% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Cdvi.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 818.8 kB (56%)

Content Size

1.5 MB

After Optimization

654.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cdvi.co.uk main page is 1.5 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. 40% of websites need less resources to load. Javascripts take 626.6 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 29.8 kB

  • Original 37.8 kB
  • After minification 35.5 kB
  • After compression 8.1 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 29.8 kB or 79% of the original size.

Image Optimization

-7%

Potential reduce by 39.4 kB

  • Original 531.3 kB
  • After minification 491.9 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. CDVI images are well optimized though.

JavaScript Optimization

-82%

Potential reduce by 515.9 kB

  • Original 626.6 kB
  • After minification 427.9 kB
  • After compression 110.8 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 515.9 kB or 82% of the original size.

CSS Optimization

-84%

Potential reduce by 233.8 kB

  • Original 277.7 kB
  • After minification 270.7 kB
  • After compression 44.0 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. Cdvi.co.uk needs all CSS files to be minified and compressed as it can save up to 233.8 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (55%)

Requests Now

33

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CDVI. 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 from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cdvi.co.uk

cdvi.co.uk

1423 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

160 ms

css_Y-mYd1d5mC_zGM0jeoocZs9JOily-y7rYJ69qLaq9lE.css

css_Y-mYd1d5mC_zGM0jeoocZs9JOily-y7rYJ69qLaq9lE.css

173 ms

css_AImD2nKZ9ABMgkG_JMfmkRqFGqxL7D09jwiIdP9dZxo.css

css_AImD2nKZ9ABMgkG_JMfmkRqFGqxL7D09jwiIdP9dZxo.css

166 ms

css_4sViengKynXKmM6oUFLa3XDzyGFDCxyni9aci9tmdqU.css

css_4sViengKynXKmM6oUFLa3XDzyGFDCxyni9aci9tmdqU.css

255 ms

css

css

26 ms

css

css

37 ms

css

css

45 ms

jquery.min.js

jquery.min.js

31 ms

js_3TykeRWpejhD4-J3vdlaNXdULg9xhOZhbsppK0o2bUs.js

js_3TykeRWpejhD4-J3vdlaNXdULg9xhOZhbsppK0o2bUs.js

167 ms

js_ZSl5qL6BWe-Vd3C-t1_wuNuFBdJXhNFPruE_n7SSW4Y.js

js_ZSl5qL6BWe-Vd3C-t1_wuNuFBdJXhNFPruE_n7SSW4Y.js

170 ms

js_MFrW0gpOlMcZnsktogPON1Hv_n08A-PEVBJ_v8OKfKM.js

js_MFrW0gpOlMcZnsktogPON1Hv_n08A-PEVBJ_v8OKfKM.js

238 ms

js_-_6EdT51Qu4pKqEuXyFxAOYad48AXoKaLQLzHiLM3mw.js

js_-_6EdT51Qu4pKqEuXyFxAOYad48AXoKaLQLzHiLM3mw.js

488 ms

lightbox.js

lightbox.js

340 ms

analytics.js

analytics.js

5 ms

collect

collect

14 ms

twitter.png

twitter.png

86 ms

footer_0.png

footer_0.png

294 ms

facebook.png

facebook.png

90 ms

google.png

google.png

89 ms

linkedin.png

linkedin.png

92 ms

youtube.png

youtube.png

91 ms

cdvilogo1.png

cdvilogo1.png

91 ms

search.png

search.png

154 ms

Demo%20Room%20410x212.jpg

Demo%20Room%20410x212.jpg

249 ms

Homepage_Range.jpg

Homepage_Range.jpg

165 ms

Nieuwsbrief_EN.jpg

Nieuwsbrief_EN.jpg

334 ms

glyphicons-halflings.png

glyphicons-halflings.png

172 ms

arrow4.png

arrow4.png

167 ms

METAL1_450x450px.jpg

METAL1_450x450px.jpg

314 ms

DWKPU_450x450px.jpg

DWKPU_450x450px.jpg

245 ms

TX26-T1%20%5BHR%5D%20450x450.png

TX26-T1%20%5BHR%5D%20450x450.png

652 ms

AC22KITBE%20450x450.jpg

AC22KITBE%20450x450.jpg

414 ms

arrows-ffffff.png

arrows-ffffff.png

261 ms

cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff

cJZKeOuBrn4kERxqtaUH3T8E0i7KZn-EPnyo3HZu7kw.woff

9 ms

MTP_ySUJH_bn48VBG8sNSnhCUOGz7vYGh680lGh-uXM.woff

MTP_ySUJH_bn48VBG8sNSnhCUOGz7vYGh680lGh-uXM.woff

17 ms

2UX7WLTfW3W8TclTUvlFyQ.woff

2UX7WLTfW3W8TclTUvlFyQ.woff

19 ms

Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff

Hgo13k-tfSpn0qi1SFdUfT8E0i7KZn-EPnyo3HZu7kw.woff

18 ms

d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff

d-6IYplOFocCacKzxwXSOD8E0i7KZn-EPnyo3HZu7kw.woff

18 ms

Accessibility Review

cdvi.co.uk accessibility score

77

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

cdvi.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

cdvi.co.uk 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

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cdvi.co.uk can be misinterpreted by Google and other search engines. Our service has detected that English 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 Cdvi.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

cdvi.co.uk

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