Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

sembcorp.co.uk

Sembcorp Energy UK | Changing Energy Management to Ensure a Sustainable Future

Page Load Speed

541 ms in total

First Response

149 ms

Resources Loaded

392 ms

Page Rendered

0 ms

sembcorp.co.uk screenshot

About Website

Click here to check amazing Sembcorp content. Otherwise, check out these important facts you probably never knew about sembcorp.co.uk

We are a leading provider of sustainable solutions supporting the UK's transition to Net Zero

Visit sembcorp.co.uk

Key Findings

We analyzed Sembcorp.co.uk page load time and found that the first response time was 149 ms and then it took 392 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

sembcorp.co.uk performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

37/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.223

56/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

Network Requests Diagram

sembcorp.co.uk

149 ms

www.sembcorpenergy.co.uk

129 ms

uk

83 ms

v1

30 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that 25% of them (1 request) were addressed to the original Sembcorp.co.uk, 50% (2 requests) were made to Sembcorp.com and 25% (1 request) were made to Sembcorpenergy.co.uk. The less responsive or slowest element that took the longest time to load (149 ms) belongs to the original domain Sembcorp.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 9.4 kB (3%)

Content Size

331.4 kB

After Optimization

322.0 kB

In fact, the total size of Sembcorp.co.uk main page is 331.4 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 293.6 kB which makes up the majority of the site volume.

HTML Optimization

-56%

Potential reduce by 9.4 kB

  • Original 16.8 kB
  • After minification 16.8 kB
  • After compression 7.5 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. 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 9.4 kB or 56% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 293.6 kB
  • After minification 293.6 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. Sembcorp images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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. This website has mostly compressed JavaScripts.

Requests Breakdown

We found no issues to fix!

Requests Now

1

After Optimization

1

The browser has sent 1 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sembcorp. According to our analytics all requests are already optimized.

Accessibility Review

sembcorp.co.uk accessibility score

89

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

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

High

Links do not have a discernible 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.

Best Practices

sembcorp.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

sembcorp.co.uk SEO score

92

Search Engine Optimization Advices

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 Sembcorp.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 Sembcorp.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 Sembcorp. 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: