Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

uj.ac.za

University of Johannesburg - UJ University in South Africa

Page Load Speed

26 sec in total

First Response

1.5 sec

Resources Loaded

19.7 sec

Page Rendered

4.8 sec

uj.ac.za screenshot

About Website

Welcome to uj.ac.za homepage info - get ready to check UJ best content for South Africa right away, or after learning these important things about uj.ac.za

University of Johannesburg (UJ) is in Johannesburg Gauteng South Africa. It offers undergraduate, postgraduate, online studies to students.

Visit uj.ac.za

Key Findings

We analyzed Uj.ac.za page load time and found that the first response time was 1.5 sec and then it took 24.5 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

uj.ac.za performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value15.8 s

0/100

10%

TBT (Total Blocking Time)

Value1,910 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.354

31/100

15%

TTI (Time to Interactive)

Value15.6 s

6/100

10%

Network Requests Diagram

uj.ac.za

1499 ms

www.uj.ac.za

1401 ms

www.uj.ac.za

2058 ms

corev15.css

574 ms

init.js

1434 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 92% of them (60 requests) were addressed to the original Uj.ac.za, 3% (2 requests) were made to Fonts.googleapis.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Uj.ac.za.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.2 MB (71%)

Content Size

4.5 MB

After Optimization

1.3 MB

In fact, the total size of Uj.ac.za main page is 4.5 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. 65% of websites need less resources to load. Javascripts take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 124.5 kB

  • Original 146.6 kB
  • After minification 130.9 kB
  • After compression 22.1 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 15.7 kB, which is 11% 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 124.5 kB or 85% of the original size.

Image Optimization

-25%

Potential reduce by 126.1 kB

  • Original 508.4 kB
  • After minification 382.4 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, UJ needs image optimization as it can save up to 126.1 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 2.0 MB

  • Original 2.8 MB
  • After minification 2.6 MB
  • After compression 746.2 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 2.0 MB or 73% of the original size.

CSS Optimization

-87%

Potential reduce by 919.5 kB

  • Original 1.1 MB
  • After minification 767.6 kB
  • After compression 138.7 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. Uj.ac.za needs all CSS files to be minified and compressed as it can save up to 919.5 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 45 (74%)

Requests Now

61

After Optimization

16

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of UJ. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

uj.ac.za accessibility score

84

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

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

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

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

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

uj.ac.za 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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

uj.ac.za SEO score

91

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 Uj.ac.za 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 Uj.ac.za 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 UJ. 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: