541 ms in total
149 ms
392 ms
0 ms
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We are a leading provider of sustainable solutions supporting the UK's transition to Net Zero
Visit sembcorp.co.ukWe 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.
sembcorp.co.uk performance score
name
value
score
weighting
Value3.9 s
24/100
10%
Value4.5 s
37/100
25%
Value8.5 s
18/100
10%
Value450 ms
63/100
30%
Value0.223
56/100
15%
Value11.6 s
18/100
10%
149 ms
129 ms
83 ms
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 size can be reduced by 9.4 kB (3%)
331.4 kB
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.
Potential reduce by 9.4 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.
Potential reduce by 0 B
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.
Potential reduce by 50 B
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.
We found no issues to fix!
1
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.
sembcorp.co.uk
149 ms
www.sembcorpenergy.co.uk
129 ms
uk
83 ms
v1
30 ms
sembcorp.co.uk accessibility score
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
Buttons do not have an accessible name
<frame> or <iframe> elements do not have a title
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
sembcorp.co.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
sembcorp.co.uk SEO score
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
Document uses legible font sizes
EN
EN
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.
sembcorp.co.uk
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: