Report Summary

  • 25

    Performance

    Renders faster than
    45% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 85% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

ion.ac.uk

Institute for Optimum Nutrition | Nutritional Therapy Education

Page Load Speed

3.1 sec in total

First Response

297 ms

Resources Loaded

2.5 sec

Page Rendered

313 ms

ion.ac.uk screenshot

About Website

Welcome to ion.ac.uk homepage info - get ready to check Ion best content for United Kingdom right away, or after learning these important things about ion.ac.uk

The Institute For Optimum Nutrition is a higher education institute offering professionally accredited courses in Nutritional Therapy

Visit ion.ac.uk

Key Findings

We analyzed Ion.ac.uk page load time and found that the first response time was 297 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

ion.ac.uk performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

4/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value1,310 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.032

100/100

15%

TTI (Time to Interactive)

Value16.2 s

5/100

10%

Network Requests Diagram

ion.ac.uk

297 ms

www.ion.ac.uk

774 ms

css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css

95 ms

css_rXCsPNjpwCDtX1Xss6FSjpxlb1n4aHJUMPja4kSFJcs.css

172 ms

css_mdakSw2j0_oTb6oHuUqhpl5F9aogVHQkNExczjofdAs.css

259 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 95% of them (38 requests) were addressed to the original Ion.ac.uk, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (829 ms) belongs to the original domain Ion.ac.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 437.5 kB (27%)

Content Size

1.7 MB

After Optimization

1.2 MB

In fact, the total size of Ion.ac.uk main page is 1.7 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. 45% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 24.5 kB

  • Original 32.0 kB
  • After minification 27.6 kB
  • After compression 7.5 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. This page needs HTML code to be minified as it can gain 4.4 kB, which is 14% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 24.5 kB or 77% of the original size.

Image Optimization

-8%

Potential reduce by 96.8 kB

  • Original 1.2 MB
  • After minification 1.1 MB

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. Ion images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 201.4 kB

  • Original 283.4 kB
  • After minification 232.7 kB
  • After compression 82.1 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 201.4 kB or 71% of the original size.

CSS Optimization

-80%

Potential reduce by 114.9 kB

  • Original 142.8 kB
  • After minification 137.2 kB
  • After compression 27.9 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. Ion.ac.uk needs all CSS files to be minified and compressed as it can save up to 114.9 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (45%)

Requests Now

38

After Optimization

21

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ion. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

ion.ac.uk accessibility score

94

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

<frame> or <iframe> elements do not have a title

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

ion.ac.uk best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

ion.ac.uk SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Ion.ac.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 Ion.ac.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 Ion. 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: