Tools & Wizards About Us
thecarbontrust.co.uk screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

thecarbontrust.co.uk

Climate Action Plans & Business Sustainability | The Carbon Trust

Page Load Speed

3.7 sec in total

First Response

798 ms

Resources Loaded

2.8 sec

Page Rendered

90 ms

thecarbontrust.co.uk screenshot

About Website

Click here to check amazing The Carbon Trust content. Otherwise, check out these important facts you probably never knew about thecarbontrust.co.uk

The Carbon Trust is an expert partner for businesses, governments and organisations around the world – helping them decarbonise and accelerate to Net Zero. 

Visit thecarbontrust.co.uk

Key Findings

We analyzed Thecarbontrust.co.uk page load time and found that the first response time was 798 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

thecarbontrust.co.uk performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

8/100

10%

LCP (Largest Contentful Paint)

Value23.6 s

0/100

25%

SI (Speed Index)

Value15.0 s

1/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value22.9 s

1/100

10%

Network Requests Diagram

www.carbontrust.com

798 ms

uc.js

55 ms

css_KZjP7TQ9wejFytgF2tpbQ4s8k9h3WLx7cGxCPTWmnrY.css

224 ms

css_HWEvvWg0odSrHH2UoDc54zY4hUDVLBrTKRW1YCVg0qo.css

450 ms

js_agwDIZqbsAP1HZ9CFETKZa9pUcX8GgR-B34K3TlLUFw.js

324 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Thecarbontrust.co.uk, 34% (14 requests) were made to Carbontrust.com and 5% (2 requests) were made to Unpkg.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Ctprodstorageaccountp.blob.core.windows.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 614.0 kB (12%)

Content Size

5.3 MB

After Optimization

4.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Thecarbontrust.co.uk main page is 5.3 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 4.5 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 97.4 kB

  • Original 109.9 kB
  • After minification 87.5 kB
  • After compression 12.5 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 22.4 kB, which is 20% 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 97.4 kB or 89% of the original size.

Image Optimization

-1%

Potential reduce by 51.0 kB

  • Original 4.5 MB
  • After minification 4.5 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. The Carbon Trust images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 262.3 kB

  • Original 439.5 kB
  • After minification 439.4 kB
  • After compression 177.2 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 262.3 kB or 60% of the original size.

CSS Optimization

-85%

Potential reduce by 203.3 kB

  • Original 239.3 kB
  • After minification 238.0 kB
  • After compression 36.0 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. Thecarbontrust.co.uk needs all CSS files to be minified and compressed as it can save up to 203.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (34%)

Requests Now

35

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The Carbon Trust. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.carbontrust.com

www.carbontrust.com

798 ms

uc.js

uc.js

55 ms

css_KZjP7TQ9wejFytgF2tpbQ4s8k9h3WLx7cGxCPTWmnrY.css

css_KZjP7TQ9wejFytgF2tpbQ4s8k9h3WLx7cGxCPTWmnrY.css

224 ms

css_HWEvvWg0odSrHH2UoDc54zY4hUDVLBrTKRW1YCVg0qo.css

css_HWEvvWg0odSrHH2UoDc54zY4hUDVLBrTKRW1YCVg0qo.css

450 ms

js_agwDIZqbsAP1HZ9CFETKZa9pUcX8GgR-B34K3TlLUFw.js

js_agwDIZqbsAP1HZ9CFETKZa9pUcX8GgR-B34K3TlLUFw.js

324 ms

js_oahn4dtq_AgxKReLhp0EAR8HNa-R4JSTc4ciYnNgia8.js

js_oahn4dtq_AgxKReLhp0EAR8HNa-R4JSTc4ciYnNgia8.js

749 ms

slick.min.js

slick.min.js

21 ms

lottie-player.js

lottie-player.js

62 ms

lottie-interactivity.min.js

lottie-interactivity.min.js

77 ms

js_LnpCIezt4Wip8AImWGU3bvUrC3smRIEVZhfg_S_0OEw.js

js_LnpCIezt4Wip8AImWGU3bvUrC3smRIEVZhfg_S_0OEw.js

165 ms

144374694.js

144374694.js

449 ms

css2

css2

57 ms

gtm.js

gtm.js

144 ms

app.js

app.js

132 ms

CIty-road-1920-800.jpg

CIty-road-1920-800.jpg

1172 ms

svg-sprite.svg

svg-sprite.svg

217 ms

logo.svg

logo.svg

145 ms

chevron-right.svg

chevron-right.svg

145 ms

quote-icon.svg

quote-icon.svg

144 ms

Stay-updated-desktop.jpg

Stay-updated-desktop.jpg

739 ms

FIFCO%20logo.png

FIFCO%20logo.png

383 ms

bentley_logo.png

bentley_logo.png

466 ms

siemens-logo.jpg

siemens-logo.jpg

467 ms

Kelloggs-crop.png

Kelloggs-crop.png

467 ms

IFClogo-2.png

IFClogo-2.png

397 ms

carlsberg-group-logo.png

carlsberg-group-logo.png

456 ms

GSK_logo_2022_0.png

GSK_logo_2022_0.png

475 ms

Virgin_Media_O2-crop.png

Virgin_Media_O2-crop.png

535 ms

Kelloggs-crop.png

Kelloggs-crop.png

543 ms

impact%20report%20experts.png

impact%20report%20experts.png

1158 ms

Icon_graph.png

Icon_graph.png

546 ms

2%20Col_AWARD.png

2%20Col_AWARD.png

554 ms

Icon_Light%20bulb.png

Icon_Light%20bulb.png

614 ms

KFOmCnqEu92Fr1Me5Q.ttf

KFOmCnqEu92Fr1Me5Q.ttf

22 ms

KFOlCnqEu92Fr1MmWUlvAw.ttf

KFOlCnqEu92Fr1MmWUlvAw.ttf

29 ms

Favorit-Medium.woff

Favorit-Medium.woff

263 ms

FavoritStd-Bold.woff

FavoritStd-Bold.woff

328 ms

FavoritStd-Light.woff

FavoritStd-Light.woff

251 ms

banner.js

banner.js

449 ms

144374694.js

144374694.js

468 ms

fb.js

fb.js

438 ms

Accessibility Review

thecarbontrust.co.uk accessibility score

91

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

Best Practices

thecarbontrust.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

thecarbontrust.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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

thecarbontrust.co.uk

Open Graph description is not detected on the main page of The Carbon Trust. 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: