Report Summary

  • 26

    Performance

    Renders faster than
    46% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

overdrive.co.za

Silicon Overdrive | IT Services and Software Development

Page Load Speed

15.2 sec in total

First Response

729 ms

Resources Loaded

14.2 sec

Page Rendered

299 ms

overdrive.co.za screenshot

About Website

Click here to check amazing Overdrive content for South Africa. Otherwise, check out these important facts you probably never knew about overdrive.co.za

Silicon Overview offers solid advice and support on a diverse range of cloud and IT services. Silicon Overdrive will manage your IT risk and make sure you are always open for business.

Visit overdrive.co.za

Key Findings

We analyzed Overdrive.co.za page load time and found that the first response time was 729 ms and then it took 14.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

overdrive.co.za performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value16.5 s

0/100

10%

TBT (Total Blocking Time)

Value890 ms

32/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value14.8 s

8/100

10%

Network Requests Diagram

overdrive.co.za

729 ms

www.overdrive.co.za

1023 ms

wp-emoji-release.min.js

511 ms

1458212887index.css

1092 ms

1458212885index.css

1123 ms

Our browser made a total of 108 requests to load all elements on the main page. We found that 56% of them (61 requests) were addressed to the original Overdrive.co.za, 11% (12 requests) were made to Apis.google.com and 6% (7 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (10.9 sec) belongs to the original domain Overdrive.co.za.

Page Optimization Overview & Recommendations

Page size can be reduced by 992.7 kB (57%)

Content Size

1.7 MB

After Optimization

734.2 kB

In fact, the total size of Overdrive.co.za 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. 75% 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. CSS take 532.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 164.0 kB

  • Original 202.1 kB
  • After minification 189.9 kB
  • After compression 38.1 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. 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 164.0 kB or 81% of the original size.

Image Optimization

-3%

Potential reduce by 12.5 kB

  • Original 472.3 kB
  • After minification 459.8 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. Overdrive images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 351.5 kB

  • Original 520.4 kB
  • After minification 510.2 kB
  • After compression 168.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 351.5 kB or 68% of the original size.

CSS Optimization

-87%

Potential reduce by 464.7 kB

  • Original 532.2 kB
  • After minification 507.5 kB
  • After compression 67.5 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. Overdrive.co.za needs all CSS files to be minified and compressed as it can save up to 464.7 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (52%)

Requests Now

95

After Optimization

46

The browser has sent 95 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Overdrive. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 39 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

overdrive.co.za 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.

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

Best Practices

overdrive.co.za 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

overdrive.co.za SEO score

100

Search Engine Optimization Advices

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Overdrive.co.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 Overdrive.co.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 Overdrive. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: