Tools & Wizards About Us
centralheatingsoutheastlondon.co.uk screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

centralheatingsoutheastlondon.co.uk

Boiler engineers | V I Hains Plumbing & Gas Services

Page Load Speed

3.5 sec in total

First Response

687 ms

Resources Loaded

2.7 sec

Page Rendered

58 ms

centralheatingsoutheastlondon.co.uk screenshot

About Website

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

Looking for boiler engineers in Catford? Call V I Hains Plumbing & Gas Services Ltd today. 25 years’ experience. We are Gas Safe registered.

Visit centralheatingsoutheastlondon.co.uk

Key Findings

We analyzed Centralheatingsoutheastlondon.co.uk page load time and found that the first response time was 687 ms and then it took 2.8 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

centralheatingsoutheastlondon.co.uk performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

74/100

25%

SI (Speed Index)

Value8.8 s

15/100

10%

TBT (Total Blocking Time)

Value2,060 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.023

100/100

15%

TTI (Time to Interactive)

Value11.5 s

18/100

10%

Network Requests Diagram

www.centralheatingsoutheastlondon.co.uk

687 ms

minified.js

30 ms

focus-within-polyfill.js

61 ms

polyfill.min.js

1103 ms

thunderbolt-commons.dae61f88.bundle.min.js

40 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Centralheatingsoutheastlondon.co.uk, 50% (17 requests) were made to Static.wixstatic.com and 38% (13 requests) were made to Static.parastorage.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Polyfill-fastly.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 428.0 kB (50%)

Content Size

849.6 kB

After Optimization

421.7 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Centralheatingsoutheastlondon.co.uk main page is 849.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. HTML takes 522.6 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 412.6 kB

  • Original 522.6 kB
  • After minification 520.9 kB
  • After compression 110.0 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 412.6 kB or 79% of the original size.

Image Optimization

-17%

Potential reduce by 11.1 kB

  • Original 64.1 kB
  • After minification 53.0 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. Obviously, Centralheatingsoutheastlondon needs image optimization as it can save up to 11.1 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 4.3 kB

  • Original 262.9 kB
  • After minification 262.9 kB
  • After compression 258.7 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.

Requests Breakdown

Number of requests can be reduced by 11 (35%)

Requests Now

31

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Centralheatingsoutheastlondon. 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 as a result speed up the page load time.

Network Requests Diagram

www.centralheatingsoutheastlondon.co.uk

www.centralheatingsoutheastlondon.co.uk

687 ms

minified.js

minified.js

30 ms

focus-within-polyfill.js

focus-within-polyfill.js

61 ms

polyfill.min.js

polyfill.min.js

1103 ms

thunderbolt-commons.dae61f88.bundle.min.js

thunderbolt-commons.dae61f88.bundle.min.js

40 ms

main.de20c391.bundle.min.js

main.de20c391.bundle.min.js

41 ms

main.renderer.1d21f023.bundle.min.js

main.renderer.1d21f023.bundle.min.js

40 ms

lodash.min.js

lodash.min.js

45 ms

react.production.min.js

react.production.min.js

43 ms

react-dom.production.min.js

react-dom.production.min.js

47 ms

browser-deprecation.bundle.es5.js

browser-deprecation.bundle.es5.js

44 ms

siteTags.bundle.min.js

siteTags.bundle.min.js

42 ms

3e9f09_717a9a0b2c1d40848eb145f749854605~mv2.jpg

3e9f09_717a9a0b2c1d40848eb145f749854605~mv2.jpg

229 ms

Radiator%20Temperature%20Wheel.jpg

Radiator%20Temperature%20Wheel.jpg

366 ms

Bathroom.jpg

Bathroom.jpg

230 ms

Heating%20boiler.jpg

Heating%20boiler.jpg

231 ms

Washing%20Machine%20Maintenance.jpg

Washing%20Machine%20Maintenance.jpg

235 ms

Close%20up%20of%20a%20Stainless%20steel%20kitchen%20sink%20with%20running%20water_%20.jpg

Close%20up%20of%20a%20Stainless%20steel%20kitchen%20sink%20with%20running%20water_%20.jpg

231 ms

Leaky%20Sink%20Drain%20Pipe.jpeg

Leaky%20Sink%20Drain%20Pipe.jpeg

234 ms

boiler.png

boiler.png

234 ms

side%20profile%20of%20van.png

side%20profile%20of%20van.png

238 ms

3e9f09_b107026558da4fa0b286416185aa1447~mv2.jpg

3e9f09_b107026558da4fa0b286416185aa1447~mv2.jpg

237 ms

3e9f09_d8dee78f8d8e41dcaf8ba8d9e3b8223f~mv2.png

3e9f09_d8dee78f8d8e41dcaf8ba8d9e3b8223f~mv2.png

235 ms

3e9f09_45c9bec9a48b47c5a6151a060545f73e~mv2.png

3e9f09_45c9bec9a48b47c5a6151a060545f73e~mv2.png

235 ms

3e9f09_f5017bd39886497796a832722bd5f453~mv2.png

3e9f09_f5017bd39886497796a832722bd5f453~mv2.png

236 ms

3e9f09_60adca57a4334ca8ab4b9bb6ff91bb99~mv2.png

3e9f09_60adca57a4334ca8ab4b9bb6ff91bb99~mv2.png

237 ms

3e9f09_043cbd4d24de4ca29467ee2b7d3fd553~mv2.png

3e9f09_043cbd4d24de4ca29467ee2b7d3fd553~mv2.png

237 ms

bundle.min.js

bundle.min.js

137 ms

file.woff

file.woff

85 ms

file.woff

file.woff

103 ms

deprecation-en.v5.html

deprecation-en.v5.html

5 ms

bolt-performance

bolt-performance

18 ms

deprecation-style.v5.css

deprecation-style.v5.css

8 ms

right-arrow.svg

right-arrow.svg

2 ms

Accessibility Review

centralheatingsoutheastlondon.co.uk accessibility score

95

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

centralheatingsoutheastlondon.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

centralheatingsoutheastlondon.co.uk SEO score

99

Search Engine Optimization Advices

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 Centralheatingsoutheastlondon.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 Centralheatingsoutheastlondon.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

centralheatingsoutheastlondon.co.uk

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