Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

dualheating.com.au

Home,Heating Cooling Specialist Melbourne,Ducted Heating,Refrigerated Air Conditioning,Evaporative Cooling

Page Load Speed

9.7 sec in total

First Response

2.1 sec

Resources Loaded

7.2 sec

Page Rendered

433 ms

dualheating.com.au screenshot

About Website

Welcome to dualheating.com.au homepage info - get ready to check Dual Heating best content right away, or after learning these important things about dualheating.com.au

Welcome to Dual Heating Melbourne ! Get HVAC Heating and Cooling supply and installation quoted today, Home, request a free measure and quote for all your heating and cooling requirements today. For H...

Visit dualheating.com.au

Key Findings

We analyzed Dualheating.com.au page load time and found that the first response time was 2.1 sec and then it took 7.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

dualheating.com.au performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value18.2 s

0/100

10%

TBT (Total Blocking Time)

Value1,390 ms

16/100

30%

CLS (Cumulative Layout Shift)

Value0.159

73/100

15%

TTI (Time to Interactive)

Value18.2 s

3/100

10%

Network Requests Diagram

www.dualheating.com.au

2069 ms

layerslider.css

425 ms

style.min.css

437 ms

styles.css

438 ms

slick.css

642 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 88% of them (88 requests) were addressed to the original Dualheating.com.au, 4% (4 requests) were made to Fonts.gstatic.com and 4% (4 requests) were made to Maps.googleapis.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Dualheating.com.au.

Page Optimization Overview & Recommendations

Page size can be reduced by 166.1 kB (6%)

Content Size

3.0 MB

After Optimization

2.8 MB

In fact, the total size of Dualheating.com.au main page is 3.0 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 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 91.6 kB

  • Original 111.3 kB
  • After minification 109.7 kB
  • After compression 19.6 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 91.6 kB or 82% of the original size.

Image Optimization

-2%

Potential reduce by 50.6 kB

  • Original 2.3 MB
  • After minification 2.2 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. Dual Heating images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 3.3 kB

  • Original 491.0 kB
  • After minification 491.0 kB
  • After compression 487.7 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

-18%

Potential reduce by 20.6 kB

  • Original 115.5 kB
  • After minification 98.6 kB
  • After compression 95.0 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. Dualheating.com.au needs all CSS files to be minified and compressed as it can save up to 20.6 kB or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 51 (55%)

Requests Now

93

After Optimization

42

The browser has sent 93 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dual Heating. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 21 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dualheating.com.au accessibility score

81

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-hidden="true"] elements contain focusable descendents

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.

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

dualheating.com.au 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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

dualheating.com.au SEO score

93

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

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

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 Dualheating.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 Dualheating.com.au 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 Dual Heating. 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: