Tools & Wizards About Us

Report Summary

  • 18

    Performance

    Renders faster than
    34% 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

chell.co.uk

Leaders in Pressure, Vacuum & Gas Flow Solutions | Chell Instruments

Page Load Speed

2.7 sec in total

First Response

252 ms

Resources Loaded

2 sec

Page Rendered

459 ms

About Website

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

Chell Instruments produces pressure, vacuum & gas flow measurement & control solutions - designed by engineers for engineers for over 40 years. Discover more…

Visit chell.co.uk

Key Findings

We analyzed Chell.co.uk page load time and found that the first response time was 252 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

chell.co.uk performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value12.7 s

0/100

25%

SI (Speed Index)

Value8.4 s

19/100

10%

TBT (Total Blocking Time)

Value710 ms

42/100

30%

CLS (Cumulative Layout Shift)

Value0.936

3/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

Network Requests Diagram

chell.co.uk

252 ms

chell.co.uk

637 ms

siteground-optimizer-combined-css-e5b8182c11e24a869d902dbe212b0094.css

544 ms

style.min.css

229 ms

app.min.css

239 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 51% of them (25 requests) were addressed to the original Chell.co.uk, 24% (12 requests) were made to Fonts.gstatic.com and 10% (5 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (637 ms) belongs to the original domain Chell.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (49%)

Content Size

2.4 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chell.co.uk main page is 2.4 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. Only a small number of websites need less resources to load. HTML takes 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 1.0 MB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 137.9 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 1.0 MB or 88% of the original size.

Image Optimization

-5%

Potential reduce by 16.1 kB

  • Original 300.0 kB
  • After minification 283.9 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. Chell images are well optimized though.

JavaScript Optimization

-12%

Potential reduce by 99.9 kB

  • Original 810.1 kB
  • After minification 809.9 kB
  • After compression 710.2 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 99.9 kB or 12% of the original size.

CSS Optimization

-3%

Potential reduce by 1.9 kB

  • Original 71.8 kB
  • After minification 71.8 kB
  • After compression 70.0 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. Chell.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 20 (59%)

Requests Now

34

After Optimization

14

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chell. 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 from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

chell.co.uk accessibility score

89

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.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

chell.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

chell.co.uk SEO score

92

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

High

Tap targets are not sized appropriately

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