Tools & Wizards About Us
boilerzone.co.uk screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

boilerzone.co.uk

Boiler Zone | The Boiler Spares Specialist | UK

Page Load Speed

1.7 sec in total

First Response

315 ms

Resources Loaded

1.3 sec

Page Rendered

136 ms

boilerzone.co.uk screenshot

About Website

Click here to check amazing Boiler Zone content. Otherwise, check out these important facts you probably never knew about boilerzone.co.uk

Default Description

Visit boilerzone.co.uk

Key Findings

We analyzed Boilerzone.co.uk page load time and found that the first response time was 315 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

boilerzone.co.uk performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.5 s

9/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

boilerzone.co.uk

315 ms

mgs_brand.css

186 ms

owl.carousel.css

188 ms

owl.theme.css

188 ms

owl.transitions.css

187 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 95% of them (53 requests) were addressed to the original Boilerzone.co.uk, 4% (2 requests) were made to Fonts.googleapis.com and 2% (1 request) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (591 ms) belongs to the original domain Boilerzone.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 621.4 kB (55%)

Content Size

1.1 MB

After Optimization

514.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Boilerzone.co.uk main page is 1.1 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 391.8 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 51.8 kB

  • Original 62.3 kB
  • After minification 51.5 kB
  • After compression 10.5 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. This page needs HTML code to be minified as it can gain 10.8 kB, which is 17% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 51.8 kB or 83% of the original size.

Image Optimization

-3%

Potential reduce by 10.4 kB

  • Original 391.8 kB
  • After minification 381.4 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. Boiler Zone images are well optimized though.

JavaScript Optimization

-80%

Potential reduce by 253.8 kB

  • Original 315.8 kB
  • After minification 210.1 kB
  • After compression 62.0 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 253.8 kB or 80% of the original size.

CSS Optimization

-83%

Potential reduce by 305.4 kB

  • Original 365.9 kB
  • After minification 342.3 kB
  • After compression 60.5 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. Boilerzone.co.uk needs all CSS files to be minified and compressed as it can save up to 305.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (53%)

Requests Now

47

After Optimization

22

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Boiler Zone. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

boilerzone.co.uk

boilerzone.co.uk

315 ms

mgs_brand.css

mgs_brand.css

186 ms

owl.carousel.css

owl.carousel.css

188 ms

owl.theme.css

owl.theme.css

188 ms

owl.transitions.css

owl.transitions.css

187 ms

mgs_social.css

mgs_social.css

178 ms

megamenu.css

megamenu.css

232 ms

owl.carousel.css

owl.carousel.css

256 ms

owl.theme.min.css

owl.theme.min.css

262 ms

promobanners.css

promobanners.css

273 ms

calendar.css

calendar.css

263 ms

quickview.css

quickview.css

263 ms

magnific-popup.css

magnific-popup.css

307 ms

bootstrap.min.css

bootstrap.min.css

579 ms

font-awesome.css

font-awesome.css

426 ms

menu.css

menu.css

350 ms

theme.css

theme.css

591 ms

responsive.css

responsive.css

350 ms

pe-icon-7-stroke.css

pe-icon-7-stroke.css

384 ms

require.js

require.js

587 ms

mixins.js

mixins.js

429 ms

requirejs-config.js

requirejs-config.js

462 ms

bootstrap.js

bootstrap.js

585 ms

custom.js

custom.js

503 ms

css

css

26 ms

css

css

32 ms

logo-small.png

logo-small.png

81 ms

854-boiler-spares-cheap-uk-slider_1.jpg

854-boiler-spares-cheap-uk-slider_1.jpg

80 ms

heatline.png

heatline.png

88 ms

worcester-bosch.png

worcester-bosch.png

87 ms

ravenheat.png

ravenheat.png

81 ms

ariston.png

ariston.png

91 ms

saunier-duval.png

saunier-duval.png

236 ms

vaillant.png

vaillant.png

205 ms

baxi.png

baxi.png

206 ms

biasi.png

biasi.png

206 ms

halstead.png

halstead.png

245 ms

gledhill.png

gledhill.png

222 ms

boiler-spares-uk-below-slider_1.jpg

boiler-spares-uk-below-slider_1.jpg

299 ms

free-uk-parts-delivery-bottom-banner.jpg

free-uk-parts-delivery-bottom-banner.jpg

379 ms

specific-genuine-parts-bottom-banner.jpg

specific-genuine-parts-bottom-banner.jpg

361 ms

2a579b07bc4bb1f06fcd8ac2c3215a13.jpg

2a579b07bc4bb1f06fcd8ac2c3215a13.jpg

321 ms

7ebece810d461bb8ba4f80c9f07f7aa4.jpg

7ebece810d461bb8ba4f80c9f07f7aa4.jpg

331 ms

913b7cff60a030f1837f432013a1b081_1.jpg

913b7cff60a030f1837f432013a1b081_1.jpg

322 ms

91f945cd43f3315506227160355043a7.jpg

91f945cd43f3315506227160355043a7.jpg

376 ms

1d7a3083876562e9874208f40c55292a.jpg

1d7a3083876562e9874208f40c55292a.jpg

426 ms

jquery.js

jquery.js

382 ms

jquery.mobile.custom.js

jquery.mobile.custom.js

226 ms

dataPost.js

dataPost.js

225 ms

bootstrap.js

bootstrap.js

377 ms

translate-inline.js

translate-inline.js

226 ms

translate.js

translate.js

214 ms

fontawesome-webfont3295.woff

fontawesome-webfont3295.woff

465 ms

jquery.cookie.js

jquery.cookie.js

277 ms

tDbI2oqRg1oM3QBjjcaDkOr9rAA.ttf

tDbI2oqRg1oM3QBjjcaDkOr9rAA.ttf

20 ms

mgs_quickview.js

mgs_quickview.js

247 ms

Accessibility Review

boilerzone.co.uk accessibility score

70

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

High

Links do not have a discernible 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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

boilerzone.co.uk best practices score

75

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

High

Browser errors were logged to the console

SEO Factors

boilerzone.co.uk SEO score

82

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

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 Boilerzone.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 Boilerzone.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

boilerzone.co.uk

Open Graph description is not detected on the main page of Boiler Zone. 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: