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cereb.org.uk screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

cereb.org.uk

Energy Comparison Service | The Energy Shop

Page Load Speed

2.7 sec in total

First Response

198 ms

Resources Loaded

1.8 sec

Page Rendered

712 ms

cereb.org.uk screenshot

About Website

Visit cereb.org.uk now to see the best up-to-date Cereb content and also check out these interesting facts you probably never knew about cereb.org.uk

Compare gas and electricity prices at The Energy Shop, the UK's leading energy price comparison service. Switch suppliers in minutes

Visit cereb.org.uk

Key Findings

We analyzed Cereb.org.uk page load time and found that the first response time was 198 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cereb.org.uk performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

62/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

87/100

25%

SI (Speed Index)

Value4.0 s

81/100

10%

TBT (Total Blocking Time)

Value480 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value0.044

99/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

cereb.org.uk

198 ms

www.theenergyshop.com

372 ms

registered-css-bundle.css.v638599580250128158

178 ms

css2

38 ms

jquery-3.7.1.min.js

405 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Cereb.org.uk, 86% (32 requests) were made to Theenergyshop.com and 5% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (998 ms) relates to the external source Theenergyshop.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (31%)

Content Size

3.2 MB

After Optimization

2.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cereb.org.uk main page is 3.2 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 2.7 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 33.2 kB

  • Original 44.3 kB
  • After minification 40.8 kB
  • After compression 11.1 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 33.2 kB or 75% of the original size.

Image Optimization

-22%

Potential reduce by 579.9 kB

  • Original 2.7 MB
  • After minification 2.1 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. Obviously, Cereb needs image optimization as it can save up to 579.9 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 115.4 kB

  • Original 170.6 kB
  • After minification 170.6 kB
  • After compression 55.2 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 115.4 kB or 68% of the original size.

CSS Optimization

-83%

Potential reduce by 286.1 kB

  • Original 345.5 kB
  • After minification 345.5 kB
  • After compression 59.3 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. Cereb.org.uk needs all CSS files to be minified and compressed as it can save up to 286.1 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (9%)

Requests Now

32

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cereb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cereb.org.uk

cereb.org.uk

198 ms

www.theenergyshop.com

www.theenergyshop.com

372 ms

registered-css-bundle.css.v638599580250128158

registered-css-bundle.css.v638599580250128158

178 ms

css2

css2

38 ms

jquery-3.7.1.min.js

jquery-3.7.1.min.js

405 ms

bestenergydeals.min.js

bestenergydeals.min.js

271 ms

registered-js-bundle.js.v638599580250128158

registered-js-bundle.js.v638599580250128158

331 ms

gtm.js

gtm.js

79 ms

newTesLogo.svg

newTesLogo.svg

91 ms

homeEnergy.jpg

homeEnergy.jpg

437 ms

responsive-site-fallback.png

responsive-site-fallback.png

404 ms

headset.png

headset.png

224 ms

green-plug.png

green-plug.png

312 ms

lightbulb-money.png

lightbulb-money.png

316 ms

supplier-esg.png

supplier-esg.png

280 ms

home-business-graph.svg

home-business-graph.svg

364 ms

scott_homepage.jpg

scott_homepage.jpg

361 ms

the-guardian.svg

the-guardian.svg

391 ms

forbes.svg

forbes.svg

397 ms

bbc.svg

bbc.svg

437 ms

the-sunday-times.svg

the-sunday-times.svg

451 ms

the-independant.svg

the-independant.svg

468 ms

energy-comparer.png

energy-comparer.png

551 ms

easySwitchHome.svg

easySwitchHome.svg

482 ms

easySwitchSearch.svg

easySwitchSearch.svg

513 ms

easySwitchSavings.svg

easySwitchSavings.svg

515 ms

calendar-money.png

calendar-money.png

532 ms

home-black-ofgem.png

home-black-ofgem.png

545 ms

award-winning.png

award-winning.png

560 ms

regular-updates.svg

regular-updates.svg

590 ms

home-business-gas.png

home-business-gas.png

816 ms

home-compare-electricity.png

home-compare-electricity.png

687 ms

home-who-supplies.png

home-who-supplies.png

998 ms

ofgem-white.png

ofgem-white.png

630 ms

KFOmCnqEu92Fr1Me5Q.ttf

KFOmCnqEu92Fr1Me5Q.ttf

18 ms

pxiEyp8kv8JHgFVrFJA.ttf

pxiEyp8kv8JHgFVrFJA.ttf

14 ms

bootstrap-icons.woff

bootstrap-icons.woff

576 ms

Accessibility Review

cereb.org.uk accessibility score

96

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

Heading elements are not in a sequentially-descending order

Best Practices

cereb.org.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

Page has valid source maps

SEO Factors

cereb.org.uk SEO score

93

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

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

cereb.org.uk

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