Report Summary

  • 47

    Performance

    Renders faster than
    66% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

Page Load Speed

8.8 sec in total

First Response

717 ms

Resources Loaded

7.6 sec

Page Rendered

397 ms

decra.co.uk screenshot

About Website

Welcome to decra.co.uk homepage info - get ready to check Decra best content for United Kingdom right away, or after learning these important things about decra.co.uk

Welcome to Decra the largest supplier of lightweight roof tiles in the UK. Lightweight roofing tiles have numerous advantages over traditional roof tiles and roof shingles

Visit decra.co.uk

Key Findings

We analyzed Decra.co.uk page load time and found that the first response time was 717 ms and then it took 8 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

decra.co.uk performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

26/100

25%

SI (Speed Index)

Value4.6 s

70/100

10%

TBT (Total Blocking Time)

Value820 ms

36/100

30%

CLS (Cumulative Layout Shift)

Value0.029

100/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

www.decra.co.uk

717 ms

all.css

241 ms

form.css

249 ms

default.css

250 ms

accordion.css

252 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 68% of them (49 requests) were addressed to the original Decra.co.uk, 6% (4 requests) were made to W.sharethis.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Decra.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 441.9 kB (71%)

Content Size

621.8 kB

After Optimization

179.9 kB

In fact, the total size of Decra.co.uk main page is 621.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 35% of websites need less resources to load. Javascripts take 509.1 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 14.9 kB

  • Original 19.9 kB
  • After minification 19.3 kB
  • After compression 5.0 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 14.9 kB or 75% of the original size.

Image Optimization

-3%

Potential reduce by 686 B

  • Original 27.1 kB
  • After minification 26.4 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. Decra images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 372.4 kB

  • Original 509.1 kB
  • After minification 484.7 kB
  • After compression 136.7 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 372.4 kB or 73% of the original size.

CSS Optimization

-82%

Potential reduce by 53.8 kB

  • Original 65.7 kB
  • After minification 58.1 kB
  • After compression 11.8 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. Decra.co.uk needs all CSS files to be minified and compressed as it can save up to 53.8 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 45 (68%)

Requests Now

66

After Optimization

21

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Decra. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

decra.co.uk accessibility score

86

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

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

Best Practices

decra.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

decra.co.uk SEO score

93

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

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Decra.co.uk can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Decra.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

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