Tools & Wizards About Us

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 72

    SEO

    Google-friendlier than
    31% of websites

unisa.ac.za

Home

Page Load Speed

23 sec in total

First Response

1.6 sec

Resources Loaded

21 sec

Page Rendered

397 ms

About Website

Visit unisa.ac.za now to see the best up-to-date Unisa content for South Africa and also check out these interesting facts you probably never knew about unisa.ac.za

Home

Visit unisa.ac.za

Key Findings

We analyzed Unisa.ac.za page load time and found that the first response time was 1.6 sec and then it took 21.4 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

unisa.ac.za performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value11.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value19.4 s

0/100

25%

SI (Speed Index)

Value30.5 s

0/100

10%

TBT (Total Blocking Time)

Value4,630 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.24

52/100

15%

TTI (Time to Interactive)

Value21.3 s

1/100

10%

Network Requests Diagram

default

1635 ms

gtm.js

44 ms

vgn-ext-templating-delivery.css

615 ms

ajax.jsp

620 ms

fontawesomev6.css

1222 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 91% of them (71 requests) were addressed to the original Unisa.ac.za, 3% (2 requests) were made to Googletagmanager.com and 3% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (8.6 sec) belongs to the original domain Unisa.ac.za.

Page Optimization Overview & Recommendations

Page size can be reduced by 319.0 kB (5%)

Content Size

6.0 MB

After Optimization

5.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Unisa.ac.za main page is 6.0 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. 60% of websites need less resources to load. Images take 5.1 MB which makes up the majority of the site volume.

HTML Optimization

-94%

Potential reduce by 239.4 kB

  • Original 253.9 kB
  • After minification 90.8 kB
  • After compression 14.5 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 163.1 kB, which is 64% 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 239.4 kB or 94% of the original size.

Image Optimization

-0%

Potential reduce by 19.8 kB

  • Original 5.1 MB
  • After minification 5.0 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. Unisa images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 53.8 kB

  • Original 566.5 kB
  • After minification 566.0 kB
  • After compression 512.6 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

-5%

Potential reduce by 5.9 kB

  • Original 125.7 kB
  • After minification 125.6 kB
  • After compression 119.8 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. Unisa.ac.za has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 41 (58%)

Requests Now

71

After Optimization

30

  • Images
  • JavaScript
  • CSS

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Unisa. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

unisa.ac.za accessibility score

75

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

[id] attributes on active, focusable elements are not unique

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

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

High

<object> elements do not have alternate text

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

unisa.ac.za 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

unisa.ac.za SEO score

72

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 Unisa.ac.za 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 Unisa.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 data is detected on the main page of Unisa. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: