Tools & Wizards About Us
alstoheat.co.uk screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

alstoheat.co.uk

Plumbing & Heating Engineers - Cheltenham | Alsto Heat LTD

Page Load Speed

7.7 sec in total

First Response

271 ms

Resources Loaded

6.9 sec

Page Rendered

488 ms

alstoheat.co.uk screenshot

About Website

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

Alsto Heat Ltd: Your trusted plumbing experts offering central heating, boiler repairs & installations. Contact us today for expert services!

Visit alstoheat.co.uk

Key Findings

We analyzed Alstoheat.co.uk page load time and found that the first response time was 271 ms and then it took 7.4 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

alstoheat.co.uk performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

39/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

26/100

25%

SI (Speed Index)

Value5.6 s

52/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.549

13/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

Network Requests Diagram

alstoheat.co.uk

271 ms

www.alstoheat.co.uk

562 ms

css

34 ms

style.min.css

91 ms

oxygen.css

176 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 63% of them (52 requests) were addressed to the original Alstoheat.co.uk, 29% (24 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (825 ms) belongs to the original domain Alstoheat.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 81.8 kB (6%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Alstoheat.co.uk main page is 1.3 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 995.9 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 74.7 kB

  • Original 95.9 kB
  • After minification 93.2 kB
  • After compression 21.3 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 74.7 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 3.9 kB

  • Original 995.9 kB
  • After minification 992.0 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. Alsto Heat images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 2.7 kB

  • Original 148.9 kB
  • After minification 148.9 kB
  • After compression 146.2 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

-1%

Potential reduce by 589 B

  • Original 39.4 kB
  • After minification 39.4 kB
  • After compression 38.8 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. Alstoheat.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 34 (60%)

Requests Now

57

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alsto Heat. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

alstoheat.co.uk

alstoheat.co.uk

271 ms

www.alstoheat.co.uk

www.alstoheat.co.uk

562 ms

css

css

34 ms

style.min.css

style.min.css

91 ms

oxygen.css

oxygen.css

176 ms

core-sss.min.css

core-sss.min.css

237 ms

cookieblocker.min.css

cookieblocker.min.css

235 ms

splide.min.css

splide.min.css

240 ms

jquery.min.js

jquery.min.js

337 ms

splide.min.js

splide.min.js

266 ms

splide-extension-auto-scroll.min.js

splide-extension-auto-scroll.min.js

255 ms

www.alstoheat.co.uk

www.alstoheat.co.uk

322 ms

unslider.css

unslider.css

321 ms

aos.css

aos.css

326 ms

basic.min.css

basic.min.css

374 ms

theme-ie11.min.css

theme-ie11.min.css

446 ms

theme.min.css

theme.min.css

446 ms

complianz.min.js

complianz.min.js

445 ms

aos.js

aos.js

458 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

477 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

478 ms

wp-polyfill.min.js

wp-polyfill.min.js

541 ms

dom-ready.min.js

dom-ready.min.js

543 ms

hooks.min.js

hooks.min.js

541 ms

i18n.min.js

i18n.min.js

542 ms

a11y.min.js

a11y.min.js

543 ms

jquery.json.min.js

jquery.json.min.js

543 ms

gravityforms.min.js

gravityforms.min.js

677 ms

utils.min.js

utils.min.js

677 ms

vendor-theme.min.js

vendor-theme.min.js

675 ms

scripts-theme.min.js

scripts-theme.min.js

677 ms

unslider-min.js

unslider-min.js

677 ms

jquery.event.move.js

jquery.event.move.js

676 ms

jquery.event.swipe.js

jquery.event.swipe.js

701 ms

gtm.js

gtm.js

133 ms

Accreditations1.png

Accreditations1.png

374 ms

Accreditations5.png

Accreditations5.png

374 ms

worcester-bosch.png

worcester-bosch.png

429 ms

Accreditations7.png

Accreditations7.png

428 ms

logo.png

logo.png

433 ms

Screen-Shot-2021-12-07-at-12.41.12.png

Screen-Shot-2021-12-07-at-12.41.12.png

653 ms

Screen-Shot-2021-12-07-at-12.41.23.png

Screen-Shot-2021-12-07-at-12.41.23.png

656 ms

Screen-Shot-2021-12-07-at-12.39.31.png

Screen-Shot-2021-12-07-at-12.39.31.png

825 ms

Screen-Shot-2021-12-07-at-12.39.37.png

Screen-Shot-2021-12-07-at-12.39.37.png

434 ms

worcester-bosch-accredited.png

worcester-bosch-accredited.png

437 ms

Accreditations2.png

Accreditations2.png

508 ms

Accreditations3.png

Accreditations3.png

509 ms

Accreditations4.png

Accreditations4.png

516 ms

Accreditations6.png

Accreditations6.png

595 ms

Check-a-Trade.png

Check-a-Trade.png

576 ms

boiler-repair-home.jpeg

boiler-repair-home.jpeg

657 ms

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85 ms

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106 ms

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104 ms

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109 ms

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108 ms

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107 ms

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106 ms

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107 ms

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108 ms

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109 ms

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111 ms

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111 ms

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110 ms

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108 ms

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pxiGyp8kv8JHgFVrLPTucHtF.ttf

110 ms

central-heating-home.jpeg

central-heating-home.jpeg

735 ms

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90 ms

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93 ms

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92 ms

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90 ms

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90 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w5aX8.ttf

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92 ms

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92 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w5aX8.ttf

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93 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w5aX8.ttf

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93 ms

Worcester-Greenstar-Gas-Boiler-doing-washing.jpeg

Worcester-Greenstar-Gas-Boiler-doing-washing.jpeg

668 ms

mystery-person.png

mystery-person.png

630 ms

js

js

51 ms

analytics.js

analytics.js

18 ms

collect

collect

12 ms

collect

collect

96 ms

js

js

75 ms

Accessibility Review

alstoheat.co.uk accessibility score

82

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

High

Some elements have a [tabindex] value greater than 0

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

Best Practices

alstoheat.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

alstoheat.co.uk SEO score

77

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

    EN

  • Encoding

    UTF-8

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

alstoheat.co.uk

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