Tools & Wizards About Us
jjroofingsupplies.co.uk screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

jjroofingsupplies.co.uk

JJ Roofing Supplies - Providers of Roofing Materials and Supplies

Page Load Speed

4.2 sec in total

First Response

276 ms

Resources Loaded

3.2 sec

Page Rendered

774 ms

jjroofingsupplies.co.uk screenshot

About Website

Visit jjroofingsupplies.co.uk now to see the best up-to-date JJ Roofing Supplies content for United Kingdom and also check out these interesting facts you probably never knew about jjroofingsupplies.co.uk

JJ Roofing Supplies are experts in providing a wide selection of roofing materials such as roof windows, felt, slate, tiles and more, across the UK.

Visit jjroofingsupplies.co.uk

Key Findings

We analyzed Jjroofingsupplies.co.uk page load time and found that the first response time was 276 ms and then it took 3.9 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

jjroofingsupplies.co.uk performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

51/100

10%

LCP (Largest Contentful Paint)

Value23.2 s

0/100

25%

SI (Speed Index)

Value15.7 s

0/100

10%

TBT (Total Blocking Time)

Value3,490 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.417

23/100

15%

TTI (Time to Interactive)

Value28.4 s

0/100

10%

Network Requests Diagram

jjroofingsupplies.co.uk

276 ms

www.jjroofingsupplies.co.uk

344 ms

044f269d239ae4914c2dc90b542024d7.css

356 ms

6e79c86609d43be54cbf5456e478c75c.js

651 ms

icon

72 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 67% of them (45 requests) were addressed to the original Jjroofingsupplies.co.uk, 4% (3 requests) were made to Ict.infinity-tracking.net and 4% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Jjroofingsupplies.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 966.8 kB (33%)

Content Size

2.9 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jjroofingsupplies.co.uk main page is 2.9 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. 75% 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 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 73.7 kB

  • Original 88.5 kB
  • After minification 87.7 kB
  • After compression 14.8 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 73.7 kB or 83% of the original size.

Image Optimization

-9%

Potential reduce by 161.2 kB

  • Original 1.9 MB
  • After minification 1.7 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. JJ Roofing Supplies images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 698.0 kB

  • Original 947.0 kB
  • After minification 756.4 kB
  • After compression 249.0 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 698.0 kB or 74% of the original size.

CSS Optimization

-99%

Potential reduce by 33.9 kB

  • Original 34.2 kB
  • After minification 461 B
  • After compression 233 B

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. Jjroofingsupplies.co.uk needs all CSS files to be minified and compressed as it can save up to 33.9 kB or 99% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (25%)

Requests Now

56

After Optimization

42

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JJ Roofing Supplies. 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 from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

jjroofingsupplies.co.uk

jjroofingsupplies.co.uk

276 ms

www.jjroofingsupplies.co.uk

www.jjroofingsupplies.co.uk

344 ms

044f269d239ae4914c2dc90b542024d7.css

044f269d239ae4914c2dc90b542024d7.css

356 ms

6e79c86609d43be54cbf5456e478c75c.js

6e79c86609d43be54cbf5456e478c75c.js

651 ms

icon

icon

72 ms

tp.widget.sync.bootstrap.min.js

tp.widget.sync.bootstrap.min.js

7 ms

css

css

43 ms

conversion.js

conversion.js

26 ms

analytics.js

analytics.js

42 ms

bat.js

bat.js

146 ms

loader.js

loader.js

40 ms

nas.v1.min.js

nas.v1.min.js

289 ms

tp.widget.bootstrap.min.js

tp.widget.bootstrap.min.js

37 ms

logo.png

logo.png

215 ms

banner-offer-block2-carousel-1.png

banner-offer-block2-carousel-1.png

214 ms

banner-offer-block2-carousel-2.png

banner-offer-block2-carousel-2.png

481 ms

banner-offer-block2-carousel-3.png

banner-offer-block2-carousel-3.png

468 ms

banner-offer-block2-carousel-4.png

banner-offer-block2-carousel-4.png

468 ms

velux_logo.jpg

velux_logo.jpg

566 ms

jjs_category1.jpg

jjs_category1.jpg

478 ms

jjs_category2.jpg

jjs_category2.jpg

282 ms

jjs_category3.jpg

jjs_category3.jpg

478 ms

jjs_category4.jpg

jjs_category4.jpg

551 ms

jjs_category5.jpg

jjs_category5.jpg

551 ms

jjs_category6.jpg

jjs_category6.jpg

552 ms

jjs_category7.jpg

jjs_category7.jpg

481 ms

jjs_category8.jpg

jjs_category8.jpg

571 ms

duratech_logo.png

duratech_logo.png

564 ms

duratech-window-mobile.png

duratech-window-mobile.png

566 ms

offers-banner-delivery.jpg

offers-banner-delivery.jpg

781 ms

duratechdpxconfig.jpg

duratechdpxconfig.jpg

781 ms

code4_5_1.jpg

code4_5_1.jpg

783 ms

cromapol_1_1_1_1.jpeg

cromapol_1_1_1_1.jpeg

779 ms

veluxggl.jpg

veluxggl.jpg

785 ms

dsc_4066-copy_1_.jpg

dsc_4066-copy_1_.jpg

780 ms

epdm_classicbond.jpg

epdm_classicbond.jpg

930 ms

boostrhybrid.jpg

boostrhybrid.jpg

844 ms

dewdcd795m2-_1.jpg

dewdcd795m2-_1.jpg

840 ms

cureitresin_2_2.jpg

cureitresin_2_2.jpg

932 ms

cromar_the_business.jpg

cromar_the_business.jpg

850 ms

flexim_roof_putty.jpg

flexim_roof_putty.jpg

853 ms

BlogPost-1.jpg

BlogPost-1.jpg

1005 ms

BlogPost-2.jpg

BlogPost-2.jpg

1014 ms

BlogPost-3.jpg

BlogPost-3.jpg

937 ms

payment-options.png

payment-options.png

932 ms

montserrat-light-webfont.woff

montserrat-light-webfont.woff

997 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1650 ms

zhcz-_WihjSQC0oHJ9TCYC3USBnSvpkopQaUR-2r7iU.ttf

zhcz-_WihjSQC0oHJ9TCYC3USBnSvpkopQaUR-2r7iU.ttf

106 ms

IQHow_FEYlDC4Gzy_m8fcvEr6Hm6RMS0v1dtXsGir4g.ttf

IQHow_FEYlDC4Gzy_m8fcvEr6Hm6RMS0v1dtXsGir4g.ttf

107 ms

2fcrYFNaTjcS6g4U3t-Y5StnKWgpfO2iSkLzTz-AABg.ttf

2fcrYFNaTjcS6g4U3t-Y5StnKWgpfO2iSkLzTz-AABg.ttf

188 ms

collect

collect

89 ms

impl-1_22.js

impl-1_22.js

86 ms

banner-centre-image-lg.png

banner-centre-image-lg.png

1550 ms

main-banner-velux-background.jpg

main-banner-velux-background.jpg

943 ms

window-main-banner.jpg

window-main-banner.jpg

1465 ms

Duratech-Banner.png

Duratech-Banner.png

1465 ms

collect

collect

250 ms

widget_v2.134.js

widget_v2.134.js

61 ms

montserrat-ultralight-webfont.woff

montserrat-ultralight-webfont.woff

1394 ms

ga-audiences

ga-audiences

106 ms

offers-banner-delivery.jpg

offers-banner-delivery.jpg

1209 ms

track

track

88 ms

allocate

allocate

200 ms

189 ms

16 ms

avatar_simple_visitor.png

avatar_simple_visitor.png

197 ms

ad80be92fd8b5a1ac8f6a7c2c5cafb41.css

ad80be92fd8b5a1ac8f6a7c2c5cafb41.css

93 ms

Accessibility Review

jjroofingsupplies.co.uk accessibility score

79

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

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

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

jjroofingsupplies.co.uk best practices score

67

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

jjroofingsupplies.co.uk SEO score

83

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 Jjroofingsupplies.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 Jjroofingsupplies.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

jjroofingsupplies.co.uk

Open Graph description is not detected on the main page of JJ Roofing Supplies. 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: