Report Summary

  • 49

    Performance

    Renders faster than
    68% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

rncb.ac.uk

A specialist residential college for young people with visual impairment

Page Load Speed

32.2 sec in total

First Response

659 ms

Resources Loaded

21.1 sec

Page Rendered

10.4 sec

rncb.ac.uk screenshot

About Website

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

The UK's leading specialist residential college of further education and training for young people with a visual impairment. The College experience is more than vocational and academic qualifications....

Visit rncb.ac.uk

Key Findings

We analyzed Rncb.ac.uk page load time and found that the first response time was 659 ms and then it took 31.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

rncb.ac.uk performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

26/100

10%

LCP (Largest Contentful Paint)

Value16.0 s

0/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0.046

99/100

15%

TTI (Time to Interactive)

Value8.6 s

37/100

10%

Network Requests Diagram

rncb.ac.uk

659 ms

www.rnc.ac.uk

370 ms

www.rnc.ac.uk

1426 ms

jquery-2.2.4.min.js

2764 ms

bootstrap.min.css

3101 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Rncb.ac.uk, 66% (35 requests) were made to Rnc.ac.uk and 8% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (9.9 sec) relates to the external source Rnc.ac.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 885.1 kB (3%)

Content Size

30.2 MB

After Optimization

29.3 MB

In fact, the total size of Rncb.ac.uk main page is 30.2 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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 30.1 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 23.5 kB

  • Original 30.2 kB
  • After minification 23.2 kB
  • After compression 6.8 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 7.0 kB, which is 23% 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 23.5 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 856.8 kB

  • Original 30.1 MB
  • After minification 29.2 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. Rncb images are well optimized though.

JavaScript Optimization

-8%

Potential reduce by 2.1 kB

  • Original 27.0 kB
  • After minification 27.0 kB
  • After compression 24.9 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

-45%

Potential reduce by 2.8 kB

  • Original 6.1 kB
  • After minification 6.1 kB
  • After compression 3.4 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. Rncb.ac.uk needs all CSS files to be minified and compressed as it can save up to 2.8 kB or 45% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (20%)

Requests Now

44

After Optimization

35

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rncb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

rncb.ac.uk accessibility score

81

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

rncb.ac.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

High

Page has valid source maps

SEO Factors

rncb.ac.uk SEO score

84

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

High

Image elements do not have [alt] attributes

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 Rncb.ac.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 Rncb.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 Rncb. 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: