Tools & Wizards About Us
coronaenergy.co.uk screenshot

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

coronaenergy.co.uk

Business Electricity and Gas Supplier | Corona Energy

Page Load Speed

4.4 sec in total

First Response

240 ms

Resources Loaded

3.8 sec

Page Rendered

383 ms

coronaenergy.co.uk screenshot

About Website

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

Corona Energy is a leading independent energy supplier with over 20 years’ experience servicing UK businesses.

Visit coronaenergy.co.uk

Key Findings

We analyzed Coronaenergy.co.uk page load time and found that the first response time was 240 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

coronaenergy.co.uk performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value18.2 s

0/100

10%

TBT (Total Blocking Time)

Value1,100 ms

24/100

30%

CLS (Cumulative Layout Shift)

Value0.606

10/100

15%

TTI (Time to Interactive)

Value32.3 s

0/100

10%

Network Requests Diagram

coronaenergy.co.uk

240 ms

www.coronaenergy.co.uk

1033 ms

tp.widget.bootstrap.min.js

23 ms

wp-notification-bars-public.css

151 ms

style.min.css

234 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 70% of them (42 requests) were addressed to the original Coronaenergy.co.uk, 18% (11 requests) were made to Home-e31.niceincontact.com and 3% (2 requests) were made to Unpkg.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Coronaenergy.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 250.1 kB (5%)

Content Size

5.5 MB

After Optimization

5.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Coronaenergy.co.uk main page is 5.5 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. 45% of websites need less resources to load. Javascripts take 4.9 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 87.8 kB

  • Original 102.1 kB
  • After minification 70.5 kB
  • After compression 14.2 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 31.5 kB, which is 31% 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 87.8 kB or 86% of the original size.

Image Optimization

-4%

Potential reduce by 20.3 kB

  • Original 481.2 kB
  • After minification 460.9 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. Corona Energy images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 128.7 kB

  • Original 4.9 MB
  • After minification 4.9 MB
  • After compression 4.7 MB

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

-17%

Potential reduce by 13.3 kB

  • Original 79.0 kB
  • After minification 78.9 kB
  • After compression 65.7 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. Coronaenergy.co.uk needs all CSS files to be minified and compressed as it can save up to 13.3 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (44%)

Requests Now

52

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Corona Energy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

coronaenergy.co.uk

coronaenergy.co.uk

240 ms

www.coronaenergy.co.uk

www.coronaenergy.co.uk

1033 ms

tp.widget.bootstrap.min.js

tp.widget.bootstrap.min.js

23 ms

wp-notification-bars-public.css

wp-notification-bars-public.css

151 ms

style.min.css

style.min.css

234 ms

cookie-law-info-public.css

cookie-law-info-public.css

238 ms

cookie-law-info-gdpr.css

cookie-law-info-gdpr.css

243 ms

public.css

public.css

241 ms

swiper-bundle.css

swiper-bundle.css

41 ms

style.css

style.css

342 ms

default.min.css

default.min.css

254 ms

jquery.min.js

jquery.min.js

22 ms

cookie-law-info-public.js

cookie-law-info-public.js

314 ms

wp-notification-bars-public.js

wp-notification-bars-public.js

312 ms

livevalidation_standalone.js

livevalidation_standalone.js

321 ms

public.js

public.js

324 ms

default_validation.js

default_validation.js

335 ms

embed.min.js

embed.min.js

486 ms

cookie-law-info-table.css

cookie-law-info-table.css

393 ms

main.js

main.js

1962 ms

logo.svg

logo.svg

158 ms

logo-initial.svg

logo-initial.svg

155 ms

icon-trustpilot-white-1.png

icon-trustpilot-white-1.png

158 ms

trustpilot-star.svg

trustpilot-star.svg

151 ms

518-x-718-19.jpg

518-x-718-19.jpg

302 ms

FixedContract.svg

FixedContract.svg

233 ms

SeamlessOnboarding.svg

SeamlessOnboarding.svg

236 ms

DedicatedManager.svg

DedicatedManager.svg

238 ms

Queries.svg

Queries.svg

240 ms

518-x-718-3-1-518x600.jpg

518-x-718-3-1-518x600.jpg

389 ms

Submit-meter-readings.svg

Submit-meter-readings.svg

317 ms

Check-Your-Energy-Usage.svg

Check-Your-Energy-Usage.svg

320 ms

ReviewYourPrices.svg

ReviewYourPrices.svg

322 ms

Full-width-6-2-1440x840.jpg

Full-width-6-2-1440x840.jpg

458 ms

SME.svg

SME.svg

418 ms

SMEwhite.svg

SMEwhite.svg

405 ms

Corporate.svg

Corporate.svg

420 ms

CorporateWhite.svg

CorporateWhite.svg

467 ms

PublicSector.svg

PublicSector.svg

487 ms

PublicSectorWhite.svg

PublicSectorWhite.svg

498 ms

Partners.svg

Partners.svg

502 ms

PartnersWhite-1.svg

PartnersWhite-1.svg

535 ms

1_objects_3-370x520.png

1_objects_3-370x520.png

802 ms

Larsseit-Bold.woff

Larsseit-Bold.woff

586 ms

Larsseit-Medium.woff

Larsseit-Medium.woff

598 ms

Corona-Energy.woff

Corona-Energy.woff

519 ms

ChatClient.aspx

ChatClient.aspx

104 ms

chatButton.html

chatButton.html

195 ms

chatClient-v2.js

chatClient-v2.js

172 ms

screen.css

screen.css

95 ms

index.html

index.html

95 ms

raygun.min.js

raygun.min.js

20 ms

fetch.min.js

fetch.min.js

93 ms

classListPolyfill.min.js

classListPolyfill.min.js

93 ms

bundle.min.js

bundle.min.js

635 ms

markdown-it.min.js

markdown-it.min.js

33 ms

markdown-it.min.js

markdown-it.min.js

32 ms

entries

entries

19 ms

translation.json

translation.json

93 ms

translation.json

translation.json

94 ms

Accessibility Review

coronaenergy.co.uk accessibility score

78

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.

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

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

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

coronaenergy.co.uk best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

coronaenergy.co.uk SEO score

92

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

    EN

  • Encoding

    UTF-8

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

coronaenergy.co.uk

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