Tools & Wizards About Us
a10boilerspares.co.uk screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

a10boilerspares.co.uk

A10 Boiler Spares Ltd | Boiler Spares & Parts Stockist

Page Load Speed

3.7 sec in total

First Response

218 ms

Resources Loaded

3.1 sec

Page Rendered

372 ms

a10boilerspares.co.uk screenshot

About Website

Visit a10boilerspares.co.uk now to see the best up-to-date A10 Boiler Spares content and also check out these interesting facts you probably never knew about a10boilerspares.co.uk

A10 Boiler Spares Ltd has been trading since 1995 specialising in plumbing, heating and electrical materials. Stocking a variety of parts from brands such as Vaillant, Glow-worm, Intergas and many mor...

Visit a10boilerspares.co.uk

Key Findings

We analyzed A10boilerspares.co.uk page load time and found that the first response time was 218 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

a10boilerspares.co.uk performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value8.4 s

2/100

25%

SI (Speed Index)

Value7.6 s

25/100

10%

TBT (Total Blocking Time)

Value240 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value0.286

42/100

15%

TTI (Time to Interactive)

Value9.1 s

33/100

10%

Network Requests Diagram

a10boilerspares.co.uk

218 ms

a10boilerspares.co.uk

432 ms

www.a10boilerspares.co.uk

1021 ms

bootstrap.css

315 ms

frontend.css

327 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 96% of them (50 requests) were addressed to the original A10boilerspares.co.uk, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to Api.getastra.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain A10boilerspares.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 718.7 kB (40%)

Content Size

1.8 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of A10boilerspares.co.uk main page is 1.8 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. 40% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 161.4 kB

  • Original 177.9 kB
  • After minification 159.7 kB
  • After compression 16.6 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 161.4 kB or 91% of the original size.

Image Optimization

-36%

Potential reduce by 506.4 kB

  • Original 1.4 MB
  • After minification 895.3 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, A10 Boiler Spares needs image optimization as it can save up to 506.4 kB or 36% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-25%

Potential reduce by 46.0 kB

  • Original 186.4 kB
  • After minification 186.4 kB
  • After compression 140.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 46.0 kB or 25% of the original size.

CSS Optimization

-15%

Potential reduce by 4.8 kB

  • Original 31.9 kB
  • After minification 31.9 kB
  • After compression 27.1 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. A10boilerspares.co.uk needs all CSS files to be minified and compressed as it can save up to 4.8 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (27%)

Requests Now

48

After Optimization

35

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of A10 Boiler Spares. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

a10boilerspares.co.uk

a10boilerspares.co.uk

218 ms

a10boilerspares.co.uk

a10boilerspares.co.uk

432 ms

www.a10boilerspares.co.uk

www.a10boilerspares.co.uk

1021 ms

bootstrap.css

bootstrap.css

315 ms

frontend.css

frontend.css

327 ms

jquery-latest.js

jquery-latest.js

534 ms

yav.js

yav.js

329 ms

yav-config.js

yav-config.js

329 ms

responsive-tabs.js

responsive-tabs.js

329 ms

responsive-tabs-2.3.2.js

responsive-tabs-2.3.2.js

420 ms

lightbox-2.6.min.js

lightbox-2.6.min.js

419 ms

jquery.capty.min.js

jquery.capty.min.js

420 ms

jquery-1.10.2.min.js

jquery-1.10.2.min.js

527 ms

jquery.smartmenus.js

jquery.smartmenus.js

422 ms

jquery.smartmenus.bootstrap.js

jquery.smartmenus.bootstrap.js

523 ms

jquery.mins.js

jquery.mins.js

630 ms

carousel.js

carousel.js

523 ms

js

js

54 ms

close.png

close.png

202 ms

loading.gif

loading.gif

199 ms

prev.png

prev.png

201 ms

next.png

next.png

199 ms

Facebook_Icon2.png

Facebook_Icon2.png

201 ms

Twitter_Icon2.png

Twitter_Icon2.png

202 ms

Instagram_Icon1.png

Instagram_Icon1.png

523 ms

logo.png

logo.png

314 ms

Easicom_Banner2.jpg

Easicom_Banner2.jpg

421 ms

Vaillant_Spares_Banner1.jpg

Vaillant_Spares_Banner1.jpg

315 ms

Alpha_StNichHeat_10y1.jpg

Alpha_StNichHeat_10y1.jpg

314 ms

Baxi_Banner.png

Baxi_Banner.png

737 ms

Intergas_Boilers_Banner1.png

Intergas_Boilers_Banner1.png

524 ms

002013268223640_thumb.jpg

002013268223640_thumb.jpg

419 ms

10546136878_thumb.jpg

10546136878_thumb.jpg

420 ms

Heatrae_Sadia_Lower-500x50061284_thumb.jpg

Heatrae_Sadia_Lower-500x50061284_thumb.jpg

522 ms

V404346901_thumb.jpg

V404346901_thumb.jpg

524 ms

Ecorad-Double-Convector-K21049_thumb.jpg

Ecorad-Double-Convector-K21049_thumb.jpg

525 ms

22mm1m3826_thumb.jpg

22mm1m3826_thumb.jpg

626 ms

x10021014_thumb.jpg

x10021014_thumb.jpg

628 ms

none.jpg

none.jpg

628 ms

Monarch_Midi40535_thumb.jpg

Monarch_Midi40535_thumb.jpg

628 ms

Magnaclean3278_thumb.png

Magnaclean3278_thumb.png

630 ms

UPS394576_thumb.jpg

UPS394576_thumb.jpg

731 ms

Nest376883_thumb.jpg

Nest376883_thumb.jpg

730 ms

Contact_Us_Icon1.jpg

Contact_Us_Icon1.jpg

733 ms

x1003.jpg

x1003.jpg

732 ms

Nest31.jpg

Nest31.jpg

847 ms

opayo-logo-white.png

opayo-logo-white.png

835 ms

visa-logo-white.png

visa-logo-white.png

835 ms

maestro-logo-white.png

maestro-logo-white.png

835 ms

mastercard-logo-white.png

mastercard-logo-white.png

836 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

788 ms

sdk.js

sdk.js

272 ms

Accessibility Review

a10boilerspares.co.uk accessibility score

88

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

[id] attributes on active, focusable elements are not unique

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

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

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

a10boilerspares.co.uk best practices score

50

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

a10boilerspares.co.uk SEO score

90

Search Engine Optimization Advices

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 A10boilerspares.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 A10boilerspares.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

a10boilerspares.co.uk

Open Graph description is not detected on the main page of A10 Boiler Spares. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: