Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 94

    SEO

    Google-friendlier than
    90% of websites

catalysed.co.uk

Catalysed Ltd - Helping teachers use digital technologies for teaching and learning

Page Load Speed

1.5 sec in total

First Response

220 ms

Resources Loaded

1.1 sec

Page Rendered

119 ms

catalysed.co.uk screenshot

About Website

Visit catalysed.co.uk now to see the best up-to-date Catalysed content and also check out these interesting facts you probably never knew about catalysed.co.uk

Learn how a doctor of education turned his PhD research into practical tools for teachers to help them make effective use of digital technologies

Visit catalysed.co.uk

Key Findings

We analyzed Catalysed.co.uk page load time and found that the first response time was 220 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

catalysed.co.uk performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

57/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value980 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.237

53/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

Network Requests Diagram

catalysed.co.uk

220 ms

bootstrap.min.css

100 ms

justified-nav.css

185 ms

templatemo_style.css

188 ms

slick.css

192 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that 78% of them (25 requests) were addressed to the original Catalysed.co.uk, 6% (2 requests) were made to Code.jquery.com and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (343 ms) belongs to the original domain Catalysed.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 51.5 kB (7%)

Content Size

769.5 kB

After Optimization

718.1 kB

In fact, the total size of Catalysed.co.uk main page is 769.5 kB. 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 658.2 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 9.6 kB

  • Original 13.1 kB
  • After minification 11.9 kB
  • After compression 3.5 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 9.6 kB or 73% of the original size.

Image Optimization

-6%

Potential reduce by 39.3 kB

  • Original 658.2 kB
  • After minification 618.9 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. Catalysed images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 1.6 kB

  • Original 75.2 kB
  • After minification 75.2 kB
  • After compression 73.6 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.

CSS Optimization

-4%

Potential reduce by 996 B

  • Original 23.1 kB
  • After minification 23.1 kB
  • After compression 22.1 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. Catalysed.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 16 (53%)

Requests Now

30

After Optimization

14

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Catalysed. 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 from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

catalysed.co.uk accessibility score

66

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

catalysed.co.uk best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

Browser errors were logged to the console

SEO Factors

catalysed.co.uk SEO score

94

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Catalysed.co.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Catalysed.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 Catalysed. 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: