Tools & Wizards About Us
underwater.com.au screenshot

Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

underwater.com.au

Dive Australia, Oceania & Asia Pacific - Scuba Diving Directory and Community Portal | Underwater Australasia

Page Load Speed

4 sec in total

First Response

95 ms

Resources Loaded

1.8 sec

Page Rendered

2.1 sec

underwater.com.au screenshot

About Website

Click here to check amazing Underwater content for Australia. Otherwise, check out these important facts you probably never knew about underwater.com.au

Scuba diving portal for Australia Oceania & Asia Pacific and the Australasia's best dive site - comprehensive information on dive shops, liveaboards, charter boats, dive gear and more - community meet...

Visit underwater.com.au

Key Findings

We analyzed Underwater.com.au page load time and found that the first response time was 95 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

underwater.com.au performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value1,110 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value1.393

0/100

15%

TTI (Time to Interactive)

Value26.8 s

0/100

10%

Network Requests Diagram

underwater.com.au

95 ms

underwater.com.au

78 ms

css2

55 ms

owl.carousel.min.css

46 ms

master.css

56 ms

Our browser made a total of 234 requests to load all elements on the main page. We found that 92% of them (216 requests) were addressed to the original Underwater.com.au, 4% (10 requests) were made to Fonts.gstatic.com and 1% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (695 ms) belongs to the original domain Underwater.com.au.

Page Optimization Overview & Recommendations

Page size can be reduced by 664.8 kB (6%)

Content Size

10.5 MB

After Optimization

9.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Underwater.com.au main page is 10.5 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. Only a small number of websites need less resources to load. Images take 10.0 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 303.8 kB

  • Original 336.0 kB
  • After minification 335.8 kB
  • After compression 32.2 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 303.8 kB or 90% of the original size.

Image Optimization

-4%

Potential reduce by 360.5 kB

  • Original 10.0 MB
  • After minification 9.6 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. Underwater images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 384 B

  • Original 98.6 kB
  • After minification 98.6 kB
  • After compression 98.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 101 B

  • Original 17.6 kB
  • After minification 17.6 kB
  • After compression 17.5 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. Underwater.com.au has all CSS files already compressed.

Requests Breakdown

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

Requests Now

219

After Optimization

199

  • Images
  • JavaScript
  • CSS

The browser has sent 219 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Underwater. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

underwater.com.au

underwater.com.au

95 ms

underwater.com.au

underwater.com.au

78 ms

css2

css2

55 ms

owl.carousel.min.css

owl.carousel.min.css

46 ms

master.css

master.css

56 ms

jquery-3.2.1.min.js

jquery-3.2.1.min.js

48 ms

swfobject.js

swfobject.js

46 ms

owl.carousel.min.js

owl.carousel.min.js

47 ms

ez-accordion.js

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87 ms

font-awesome.min.css

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84 ms

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91 ms

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29 ms

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452 ms

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32 ms

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65 ms

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71 ms

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65 ms

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373 ms

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110 ms

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54 ms

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590 ms

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582 ms

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549 ms

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547 ms

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590 ms

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543 ms

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556 ms

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486 ms

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448 ms

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431 ms

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432 ms

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paralenz-logo.jpg

171 ms

QYSEA.jpg

QYSEA.jpg

172 ms

ratio-dive-computers.gif

ratio-dive-computers.gif

257 ms

scubajet.gif

scubajet.gif

172 ms

scubalamp.jpg

scubalamp.jpg

178 ms

Sea-Sea.gif

Sea-Sea.gif

160 ms

seadoo.jpg

seadoo.jpg

158 ms

sealife-logo-BLACK-AND-YELLOW-square.jpg

sealife-logo-BLACK-AND-YELLOW-square.jpg

179 ms

seavu-logo.jpg

seavu-logo.jpg

155 ms

shark-shield.jpg

shark-shield.jpg

147 ms

spare-air.jpg

spare-air.jpg

151 ms

sticktite-logo.jpg

sticktite-logo.jpg

161 ms

sublue.gif

sublue.gif

156 ms

Suunto-Dive-Computers-Sales.jpg

Suunto-Dive-Computers-Sales.jpg

158 ms

swellpro.gif

swellpro.gif

249 ms

t-housing.gif

t-housing.gif

151 ms

tusa.jpg

tusa.jpg

241 ms

un-photographics.gif

un-photographics.gif

152 ms

venture-heat-australia-logo_1.jpg

venture-heat-australia-logo_1.jpg

150 ms

XTAR-Logo.jpg

XTAR-Logo.jpg

143 ms

yamaha-licenced-logo.jpg

yamaha-licenced-logo.jpg

150 ms

youcanrobot.gif

youcanrobot.gif

147 ms

zcifi.gif

zcifi.gif

150 ms

arrow-left.png

arrow-left.png

161 ms

arrow-right.png

arrow-right.png

151 ms

list_devider.gif

list_devider.gif

152 ms

prev.png

prev.png

110 ms

next.png

next.png

13 ms

Accessibility Review

underwater.com.au accessibility score

71

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

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>).

High

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

Best Practices

underwater.com.au best practices score

58

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

SEO Factors

underwater.com.au SEO score

81

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

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

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Underwater.com.au 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 Underwater.com.au main page’s claimed encoding is iso-8859-1. 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

underwater.com.au

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