Tools & Wizards About Us
russellblack.co.uk screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

russellblack.co.uk

Russell Black - Experts in Heating, Bathrooms and Plumbing

Page Load Speed

10.1 sec in total

First Response

1.4 sec

Resources Loaded

8.5 sec

Page Rendered

236 ms

russellblack.co.uk screenshot

About Website

Visit russellblack.co.uk now to see the best up-to-date Russell Black content and also check out these interesting facts you probably never knew about russellblack.co.uk

Welcome to Russell Black - Experts in Heating, Bathrooms and Plumbing. We are a Gas Safe Registered Installer

Visit russellblack.co.uk

Key Findings

We analyzed Russellblack.co.uk page load time and found that the first response time was 1.4 sec and then it took 8.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

russellblack.co.uk performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.3 s

1/100

10%

LCP (Largest Contentful Paint)

Value9.6 s

0/100

25%

SI (Speed Index)

Value17.1 s

0/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value10.4 s

24/100

10%

Network Requests Diagram

www.russellblack.co.uk

1381 ms

style.min.css

426 ms

extendify-utilities.css

331 ms

style.css

350 ms

vanilla.css

355 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 33% of them (27 requests) were addressed to the original Russellblack.co.uk, 63% (52 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Russellblack.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 258.4 kB (18%)

Content Size

1.4 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Russellblack.co.uk main page is 1.4 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. 60% of websites need less resources to load. Images take 963.4 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 42.1 kB

  • Original 52.2 kB
  • After minification 50.4 kB
  • After compression 10.0 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 42.1 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 17.4 kB

  • Original 963.4 kB
  • After minification 946.0 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. Russell Black images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 20.4 kB

  • Original 133.9 kB
  • After minification 133.9 kB
  • After compression 113.5 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 20.4 kB or 15% of the original size.

CSS Optimization

-66%

Potential reduce by 178.5 kB

  • Original 269.4 kB
  • After minification 267.5 kB
  • After compression 90.8 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. Russellblack.co.uk needs all CSS files to be minified and compressed as it can save up to 178.5 kB or 66% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (57%)

Requests Now

28

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Russell Black. 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

www.russellblack.co.uk

www.russellblack.co.uk

1381 ms

style.min.css

style.min.css

426 ms

extendify-utilities.css

extendify-utilities.css

331 ms

style.css

style.css

350 ms

vanilla.css

vanilla.css

355 ms

js_composer.min.css

js_composer.min.css

356 ms

jquery.min.js

jquery.min.js

337 ms

jquery-migrate.min.js

jquery-migrate.min.js

1263 ms

modernizr.custom.min.js

modernizr.custom.min.js

1266 ms

index.js

index.js

1594 ms

index.js

index.js

1229 ms

third-party.js

third-party.js

1217 ms

library.js

library.js

1592 ms

scripts.js

scripts.js

1640 ms

comment-reply.min.js

comment-reply.min.js

1640 ms

js_composer_front.min.js

js_composer_front.min.js

1641 ms

css

css

30 ms

logo.png

logo.png

342 ms

bathroom.jpg

bathroom.jpg

606 ms

breakdown.jpg

breakdown.jpg

616 ms

boiler2.jpg

boiler2.jpg

611 ms

plumbing1.jpg

plumbing1.jpg

624 ms

bathroom1-300x225.jpg

bathroom1-300x225.jpg

617 ms

taps2-300x225.jpg

taps2-300x225.jpg

648 ms

bigstock-Home-gas-fired-boiler-The-ins-50430467-300x200.jpg

bigstock-Home-gas-fired-boiler-The-ins-50430467-300x200.jpg

919 ms

taps1-300x225.jpg

taps1-300x225.jpg

930 ms

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collect

collect

31 ms

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js

js

88 ms

Accessibility Review

russellblack.co.uk accessibility score

78

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

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

Best Practices

russellblack.co.uk best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

russellblack.co.uk SEO score

93

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

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 Russellblack.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 Russellblack.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

russellblack.co.uk

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