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56

Performance

Renders faster than
73% of other websites
63

Accessibility

Visual factors better than
that of 28% of websites
50

Best Practices

More advanced features
available than in
18% of websites
76

SEO

Google-friendlier than
35% of websites

First Response

2.1 sec

Resources Loaded

18.7 sec

Page Rendered

176 ms

iainsscubaschool.co.za screenshot

About Website

Click here to check amazing Iainsscubaschool content. Otherwise, check out these important facts you probably never knew about iainsscubaschool.co.za

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Key Findings

We analyzed Iainsscubaschool.co.za page load time and found that the first response time was 2.1 sec and then it took 18.9 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.

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

17/100

25%

SI (Speed Index)

Value7.4 s

28/100

10%

TBT (Total Blocking Time)

Value140 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.283

43/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

iainsscubaschool.co.za

2118 ms

bubbles.gif

978 ms

welcdivr.gif

1220 ms

r1_c1.jpg

1043 ms

r1_c2.jpg

996 ms

Our browser made a total of 231 requests to load all elements on the main page. We found that all of those requests were addressed to Iainsscubaschool.co.za and no external sources were called. The less responsive or slowest element that took the longest time to load (3.5 sec) belongs to the original domain Iainsscubaschool.co.za.

Content Size

245.2 kB

After Optimization

164.9 kB

In fact, the total size of Iainsscubaschool.co.za main page is 245.2 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Images take 220.0 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 22.9 kB

Original 25.2 kB
After minification 25.0 kB
After compression 2.3 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 22.9 kB or 91% of the original size.

Image Optimization

-26%

Potential reduce by 57.3 kB

Original 220.0 kB
After minification 162.6 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, Iainsscubaschool needs image optimization as it can save up to 57.3 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Now

230

After Optimization

33

The browser has sent 230 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Iainsscubaschool. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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

High

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

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

AR
Language Claimed

N/A
Encoding

N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Iainsscubaschool.co.za can be misinterpreted by Google and other search engines. Our service has detected that Arabic 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 Iainsscubaschool.co.za main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

iainsscubaschool.co.za

Open Graph description is not detected on the main page of Iainsscubaschool. 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: