Tools & Wizards About Us
rbcentralsystems.co.uk screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

rbcentralsystems.co.uk

RB Central Vacuum & Ventilation Systems | South East England

Page Load Speed

6.1 sec in total

First Response

200 ms

Resources Loaded

5.3 sec

Page Rendered

536 ms

rbcentralsystems.co.uk screenshot

About Website

Visit rbcentralsystems.co.uk now to see the best up-to-date RB Central Systems content and also check out these interesting facts you probably never knew about rbcentralsystems.co.uk

Based in Kent, RB Central Vacuum & Ventilation Systems offer a wide range of Central Vacuum, Ventilation & MVHR Systems in South East England.

Visit rbcentralsystems.co.uk

Key Findings

We analyzed Rbcentralsystems.co.uk page load time and found that the first response time was 200 ms and then it took 5.9 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

rbcentralsystems.co.uk performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value18.8 s

0/100

25%

SI (Speed Index)

Value15.1 s

1/100

10%

TBT (Total Blocking Time)

Value2,900 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value14.6 s

8/100

10%

Network Requests Diagram

rbcentralsystems.co.uk

200 ms

www.rbcentralsystems.co.uk

395 ms

styles.css

1614 ms

iconfont-min.css

599 ms

style.css

19 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 83% of them (49 requests) were addressed to the original Rbcentralsystems.co.uk, 5% (3 requests) were made to Use.fontawesome.com and 5% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Rbcentralsystems.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 598.6 kB (13%)

Content Size

4.7 MB

After Optimization

4.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rbcentralsystems.co.uk main page is 4.7 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. 80% 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 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 122.3 kB

  • Original 146.3 kB
  • After minification 143.2 kB
  • After compression 23.9 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 122.3 kB or 84% of the original size.

Image Optimization

-12%

Potential reduce by 472.7 kB

  • Original 4.1 MB
  • After minification 3.6 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, RB Central Systems needs image optimization as it can save up to 472.7 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 1.3 kB

  • Original 385.7 kB
  • After minification 385.7 kB
  • After compression 384.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 2.3 kB

  • Original 65.2 kB
  • After minification 63.2 kB
  • After compression 62.9 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. Rbcentralsystems.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 39 (72%)

Requests Now

54

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RB Central Systems. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rbcentralsystems.co.uk

rbcentralsystems.co.uk

200 ms

www.rbcentralsystems.co.uk

www.rbcentralsystems.co.uk

395 ms

styles.css

styles.css

1614 ms

iconfont-min.css

iconfont-min.css

599 ms

style.css

style.css

19 ms

custom-frontend-lite.min.css

custom-frontend-lite.min.css

23 ms

swiper.min.css

swiper.min.css

19 ms

all.min.css

all.min.css

28 ms

v4-shims.min.css

v4-shims.min.css

32 ms

wpbf-premium.css

wpbf-premium.css

35 ms

all.css

all.css

148 ms

v4-shims.css

v4-shims.css

188 ms

css

css

36 ms

smartslider.min.css

smartslider.min.css

14 ms

jquery.min.js

jquery.min.js

1630 ms

jquery-migrate.min.js

jquery-migrate.min.js

14 ms

v4-shims.min.js

v4-shims.min.js

20 ms

tp.widget.bootstrap.min.js

tp.widget.bootstrap.min.js

22 ms

n2.min.js

n2.min.js

25 ms

smartslider-frontend.min.js

smartslider-frontend.min.js

29 ms

ss-simple.min.js

ss-simple.min.js

1542 ms

email-decode.min.js

email-decode.min.js

25 ms

index.js

index.js

38 ms

index.js

index.js

36 ms

gtm4wp-contact-form-7-tracker.js

gtm4wp-contact-form-7-tracker.js

43 ms

gtm4wp-form-move-tracker.js

gtm4wp-form-move-tracker.js

50 ms

site-min.js

site-min.js

52 ms

comment-reply.min.js

comment-reply.min.js

59 ms

site.js

site.js

63 ms

api.js

api.js

58 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

66 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

70 ms

wp-polyfill.min.js

wp-polyfill.min.js

77 ms

index.js

index.js

78 ms

webpack.runtime.min.js

webpack.runtime.min.js

86 ms

frontend-modules.min.js

frontend-modules.min.js

85 ms

waypoints.min.js

waypoints.min.js

93 ms

core.min.js

core.min.js

94 ms

frontend.min.js

frontend.min.js

100 ms

gtm.js

gtm.js

139 ms

RB-Central-Vacuum-Ventilation-Systems.png

RB-Central-Vacuum-Ventilation-Systems.png

1010 ms

AXCO-HRV-NEW-UNIT-in-situ.jpg

AXCO-HRV-NEW-UNIT-in-situ.jpg

1102 ms

beam_vacuum1-1024x768.png

beam_vacuum1-1024x768.png

1372 ms

familyandgirloncouch.jpg

familyandgirloncouch.jpg

99 ms

Central-Vacuum.jpg

Central-Vacuum.jpg

952 ms

Axco-Ventilation.jpg

Axco-Ventilation.jpg

57 ms

Positive-Input-Ventilation.jpg

Positive-Input-Ventilation.jpg

58 ms

Laundy.jpg

Laundy.jpg

1049 ms

Napit-Logo.jpg

Napit-Logo.jpg

100 ms

BPEC-Certified.jpg

BPEC-Certified.jpg

103 ms

Nic-Ventilation.jpg

Nic-Ventilation.jpg

128 ms

Testimonials.jpg

Testimonials.jpg

129 ms

Beam-Brochure.jpg

Beam-Brochure.jpg

195 ms

page-builder-framework.woff

page-builder-framework.woff

837 ms

fa-brands-400.woff

fa-brands-400.woff

157 ms

fa-brands-400.woff

fa-brands-400.woff

1941 ms

recaptcha__en.js

recaptcha__en.js

59 ms

js

js

65 ms

destination

destination

105 ms

Accessibility Review

rbcentralsystems.co.uk accessibility score

88

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

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

rbcentralsystems.co.uk best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

rbcentralsystems.co.uk SEO score

83

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

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 Rbcentralsystems.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 Rbcentralsystems.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

rbcentralsystems.co.uk

Open Graph data is detected on the main page of RB Central Systems. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: