Access cornelsen.co.uk. Cornelsen Soil/Groundwater Thermal Remediation PFAS Treatment United Kingdom

Report Summary

About Website

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

Cornelsen is a top UK provider of contaminated land & groundwater In-Situ Thermal Remediation (ISTR) with Steam Enhanced Extraction (SEE), Electrical Resistance Heating (ERH), Thermal Conduction Heati...

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name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value11.4 s

0/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value190 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

www.cornelsen.co.uk

515 ms

minified.js

24 ms

focus-within-polyfill.js

23 ms

polyfill.min.js

957 ms

thunderbolt-commons.60ed9a5a.bundle.min.js

6 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Cornelsen.co.uk, 36% (17 requests) were made to Static.parastorage.com and 30% (14 requests) were made to Static.wixstatic.com. The less responsive or slowest element that took the longest time to load (957 ms) relates to the external source Polyfill-fastly.io.

Content Size

1.2 MB

After Optimization

515.4 kB

In fact, the total size of Cornelsen.co.uk main page is 1.2 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. 25% of websites need less resources to load. HTML takes 852.9 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 671.0 kB

Original 852.9 kB
After minification 851.1 kB
After compression 181.9 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 671.0 kB or 79% of the original size.

Image Optimization

-2%

Potential reduce by 1.9 kB

Original 94.6 kB
After minification 92.7 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. Cornelsen images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 48.1 kB

Original 288.8 kB
After minification 288.8 kB
After compression 240.7 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 48.1 kB or 17% of the original size.

Requests Now

After Optimization

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cornelsen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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/).

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 Cornelsen.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 Cornelsen.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

cornelsen.co.uk

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Cornelsen Soil/Groundwater Thermal Remediation PFAS Treatment United Kingdom

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)