Tools & Wizards About Us
vaillantservicing.co.uk screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

vaillantservicing.co.uk

Expert Vaillant Boiler Servicing Repairs. Ex-Vaillant Engineers London

Page Load Speed

974 ms in total

First Response

43 ms

Resources Loaded

759 ms

Page Rendered

172 ms

vaillantservicing.co.uk screenshot

About Website

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

vaillantservice.co.uk is a website providing expert boiler advice, and services for Vaillant boilers in London. Ex-Vaillant Engineers. Fixed price repairs and boiler servicing.

Visit vaillantservicing.co.uk

Key Findings

We analyzed Vaillantservicing.co.uk page load time and found that the first response time was 43 ms and then it took 931 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

vaillantservicing.co.uk performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value9.9 s

0/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value1,820 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value18.5 s

3/100

10%

Network Requests Diagram

vaillantservicing.co.uk

43 ms

www.vaillantservicing.co.uk

17 ms

www.vaillantservicing.co.uk

39 ms

vaillant-slide1-edited-960x350.png

73 ms

BATH-MEGAFLO-1500x600-1152w.png

60 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 7% of them (3 requests) were addressed to the original Vaillantservicing.co.uk, 26% (11 requests) were made to Irp-cdn.multiscreensite.com and 16% (7 requests) were made to Lirp.cdn-website.com. The less responsive or slowest element that took the longest time to load (145 ms) relates to the external source Static.doubleclick.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 125.6 kB (7%)

Content Size

1.7 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vaillantservicing.co.uk main page is 1.7 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 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 87.9 kB

  • Original 133.2 kB
  • After minification 129.8 kB
  • After compression 45.3 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 87.9 kB or 66% of the original size.

Image Optimization

-0%

Potential reduce by 53 B

  • Original 1.0 MB
  • After minification 1.0 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. Vaillant Servicing images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 34.2 kB

  • Original 480.4 kB
  • After minification 480.1 kB
  • After compression 446.2 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

-5%

Potential reduce by 3.4 kB

  • Original 70.5 kB
  • After minification 70.5 kB
  • After compression 67.1 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. Vaillantservicing.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 11 (29%)

Requests Now

38

After Optimization

27

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vaillant Servicing. 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

vaillantservicing.co.uk

vaillantservicing.co.uk

43 ms

www.vaillantservicing.co.uk

www.vaillantservicing.co.uk

17 ms

www.vaillantservicing.co.uk

www.vaillantservicing.co.uk

39 ms

vaillant-slide1-edited-960x350.png

vaillant-slide1-edited-960x350.png

73 ms

BATH-MEGAFLO-1500x600-1152w.png

BATH-MEGAFLO-1500x600-1152w.png

60 ms

cse.js

cse.js

84 ms

jquery-3.7.0.min.js

jquery-3.7.0.min.js

51 ms

d-js-one-runtime-unified-desktop.min.js

d-js-one-runtime-unified-desktop.min.js

66 ms

d-js-jquery-migrate.min.js

d-js-jquery-migrate.min.js

67 ms

js

js

91 ms

LADS-SLIDE-WEB-960x350.png

LADS-SLIDE-WEB-960x350.png

67 ms

ageist_J9xTyK4uSZaQ2a9sADP7-960x350.png

ageist_J9xTyK4uSZaQ2a9sADP7-960x350.png

63 ms

F54-ECOTEC3-960x350.png

F54-ECOTEC3-960x350.png

71 ms

F-960x350.75-SLIDE.png

F-960x350.75-SLIDE.png

62 ms

SLIDE-1-960x415.png

SLIDE-1-960x415.png

65 ms

SLIDE-2-960x415.png

SLIDE-2-960x415.png

70 ms

SLIDE-3-960x415.png

SLIDE-3-960x415.png

72 ms

SLIDE-4-960x415.png

SLIDE-4-960x415.png

72 ms

SLIDE5-960x415.png

SLIDE5-960x415.png

71 ms

SLIDE6-960x415.png

SLIDE6-960x415.png

71 ms

vaillant-service-alpha_endoySXQQSyPxsDEtKxA-350x128-282w.png

vaillant-service-alpha_endoySXQQSyPxsDEtKxA-350x128-282w.png

44 ms

Vaillant%20Engineers-600x205-340w.png

Vaillant%20Engineers-600x205-340w.png

62 ms

imgres-259x194-96w.png

imgres-259x194-96w.png

59 ms

LOGO-BOX-300x200-360w.png

LOGO-BOX-300x200-360w.png

62 ms

BOILER%20LOGOS%20GASWORKS-600x100-366w.png

BOILER%20LOGOS%20GASWORKS-600x100-366w.png

61 ms

Approved-147x147-66w.png

Approved-147x147-66w.png

61 ms

22FrQ7g1TfE

22FrQ7g1TfE

130 ms

cse_element__en.js

cse_element__en.js

28 ms

default+en.css

default+en.css

115 ms

bubblegum.css

bubblegum.css

117 ms

async-ads.js

async-ads.js

74 ms

branding.png

branding.png

25 ms

clear.png

clear.png

21 ms

nav_logo114.png

nav_logo114.png

21 ms

www-player.css

www-player.css

25 ms

www-embed-player.js

www-embed-player.js

50 ms

base.js

base.js

74 ms

ad_status.js

ad_status.js

145 ms

om_QuI9M6WDewyV11PDqwyZXtjss-zYzBgeHLXyLCgE.js

om_QuI9M6WDewyV11PDqwyZXtjss-zYzBgeHLXyLCgE.js

73 ms

embed.js

embed.js

26 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

127 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

130 ms

id

id

22 ms

Accessibility Review

vaillantservicing.co.uk accessibility score

86

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

vaillantservicing.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

vaillantservicing.co.uk SEO score

73

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vaillantservicing.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 Vaillantservicing.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

vaillantservicing.co.uk

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