Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

energy.unimelb.edu.au

Melbourne Energy Institute - University of Melbourne

Page Load Speed

8.3 sec in total

First Response

1.2 sec

Resources Loaded

6.7 sec

Page Rendered

325 ms

energy.unimelb.edu.au screenshot

About Website

Welcome to energy.unimelb.edu.au homepage info - get ready to check Energy Unimelb best content for Australia right away, or after learning these important things about energy.unimelb.edu.au

Interdisciplinary research institute at the University of Melbourne dedicated to exploring technologies, business models, and policies that drive the transition to a sustainable and clean energy syste...

Visit energy.unimelb.edu.au

Key Findings

We analyzed Energy.unimelb.edu.au page load time and found that the first response time was 1.2 sec and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

energy.unimelb.edu.au performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value18.4 s

0/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value1,330 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0.43

22/100

15%

TTI (Time to Interactive)

Value17.9 s

4/100

10%

Network Requests Diagram

energy.unimelb.edu.au

1223 ms

css_CKoWqiBj9gVXhPuDSnNphuEB0b0J2To76x0pX0EGqn4.css

499 ms

css_hGe6Xxhbe51AeOBwYCS5REDrxvGIgQoKFwMfdMmKx7o.css

497 ms

css_Ifssapqgs_gkQJRXxna9LIXeqKMH0N_EaRoaLc_H1eY.css

495 ms

css_cNf6Cweio-KtRcfkEVoUCMppPwAaPE4s9EYjloi7__E.css

754 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 39% of them (32 requests) were addressed to the original Energy.unimelb.edu.au, 23% (19 requests) were made to O.twimg.com and 13% (11 requests) were made to Brand.unimelb.edu.au. The less responsive or slowest element that took the longest time to load (4.4 sec) belongs to the original domain Energy.unimelb.edu.au.

Page Optimization Overview & Recommendations

Page size can be reduced by 390.7 kB (9%)

Content Size

4.5 MB

After Optimization

4.1 MB

In fact, the total size of Energy.unimelb.edu.au main page is 4.5 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. 65% of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 35.2 kB

  • Original 45.2 kB
  • After minification 43.4 kB
  • After compression 10.0 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 35.2 kB or 78% of the original size.

Image Optimization

-3%

Potential reduce by 106.8 kB

  • Original 4.1 MB
  • After minification 4.0 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. Energy Unimelb images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 145.9 kB

  • Original 220.8 kB
  • After minification 183.1 kB
  • After compression 74.9 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 145.9 kB or 66% of the original size.

CSS Optimization

-78%

Potential reduce by 102.8 kB

  • Original 131.3 kB
  • After minification 126.5 kB
  • After compression 28.5 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. Energy.unimelb.edu.au needs all CSS files to be minified and compressed as it can save up to 102.8 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (37%)

Requests Now

78

After Optimization

49

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Energy Unimelb. 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 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

energy.unimelb.edu.au accessibility score

93

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-*] attributes do not match their roles

Best Practices

energy.unimelb.edu.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

energy.unimelb.edu.au SEO score

92

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Energy.unimelb.edu.au 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 Energy.unimelb.edu.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 Energy Unimelb. 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: