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Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

nicedsu.org.uk

NICE Decision Support Unit | NICE Decision Support Unit | The University of Sheffield

Page Load Speed

1.1 sec in total

First Response

343 ms

Resources Loaded

627 ms

Page Rendered

106 ms

nicedsu.org.uk screenshot

About Website

Welcome to nicedsu.org.uk homepage info - get ready to check NICE Dsu best content right away, or after learning these important things about nicedsu.org.uk

The Decision Support Unit (DSU) is run by the University of Sheffield, providing advice and support to the National Institute for Health and Care Excellence (NICE).

Visit nicedsu.org.uk

Key Findings

We analyzed Nicedsu.org.uk page load time and found that the first response time was 343 ms and then it took 733 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

nicedsu.org.uk performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

94/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value1.6 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value1.6 s

100/100

10%

Network Requests Diagram

nicedsu.org.uk

343 ms

suspendedpage.cgi

241 ms

font-awesome.min.css

17 ms

fontawesome-webfont.woff

14 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that 50% of them (2 requests) were addressed to the original Nicedsu.org.uk, 50% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (343 ms) belongs to the original domain Nicedsu.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 26.5 kB (22%)

Content Size

122.2 kB

After Optimization

95.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nicedsu.org.uk main page is 122.2 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. Only 10% of websites need less resources to load. CSS take 68.4 kB which makes up the majority of the site volume.

HTML Optimization

-46%

Potential reduce by 3.5 kB

  • Original 7.5 kB
  • After minification 7.2 kB
  • After compression 4.0 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 3.5 kB or 46% of the original size.

Image Optimization

-17%

Potential reduce by 6.8 kB

  • Original 38.9 kB
  • After minification 32.1 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. Obviously, NICE Dsu needs image optimization as it can save up to 6.8 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 44 B

  • Original 7.5 kB
  • After minification 7.5 kB
  • After compression 7.5 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

-24%

Potential reduce by 16.2 kB

  • Original 68.4 kB
  • After minification 68.4 kB
  • After compression 52.1 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. Nicedsu.org.uk needs all CSS files to be minified and compressed as it can save up to 16.2 kB or 24% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

1

After Optimization

1

  • CSS

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

Network Requests Diagram

nicedsu.org.uk

nicedsu.org.uk

343 ms

suspendedpage.cgi

suspendedpage.cgi

241 ms

font-awesome.min.css

font-awesome.min.css

17 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

14 ms

Accessibility Review

nicedsu.org.uk accessibility score

83

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.

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

nicedsu.org.uk best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

nicedsu.org.uk SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nicedsu.org.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 Nicedsu.org.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

nicedsu.org.uk

Open Graph description is not detected on the main page of NICE Dsu. 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: