24 sec in total
6 sec
17.8 sec
141 ms
Visit dern.org.au now to see the best up-to-date DERN content and also check out these interesting facts you probably never knew about dern.org.au
DERN is developed and managed by the Australian Council for Educational Research (ACER).
Visit dern.org.auWe analyzed Dern.org.au page load time and found that the first response time was 6 sec and then it took 17.9 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.
dern.org.au performance score
name
value
score
weighting
Value6.1 s
3/100
10%
Value11.2 s
0/100
25%
Value12.1 s
3/100
10%
Value20 ms
100/100
30%
Value0.02
100/100
15%
Value7.1 s
51/100
10%
6045 ms
1302 ms
1639 ms
1759 ms
1774 ms
Our browser made a total of 33 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Dern.org.au, 6% (2 requests) were made to Ssl.google-analytics.com and 3% (1 request) were made to Js-agent.newrelic.com. The less responsive or slowest element that took the longest time to load (7.4 sec) relates to the external source Dern.acer.edu.au.
Page size can be reduced by 300.8 kB (37%)
823.0 kB
522.2 kB
In fact, the total size of Dern.org.au main page is 823.0 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. Only 10% of websites need less resources to load. Images take 396.5 kB which makes up the majority of the site volume.
Potential reduce by 15.8 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 15.8 kB or 70% of the original size.
Potential reduce by 4.1 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. DERN images are well optimized though.
Potential reduce by 230.4 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 230.4 kB or 67% of the original size.
Potential reduce by 50.5 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. Dern.org.au needs all CSS files to be minified and compressed as it can save up to 50.5 kB or 82% of the original size.
Number of requests can be reduced by 12 (38%)
32
20
The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DERN. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
dern.acer.edu.au
6045 ms
jquery-ui-1.8.20.custom.css
1302 ms
screen
1639 ms
jquery-1.7.2.min.js
1759 ms
jquery-ui-1.8.20.custom.min.js
1774 ms
slideshow
7359 ms
acer-banner-logo.png
302 ms
dern-logo.png
300 ms
home-icon.png
1335 ms
DERN_banner_2013_SUBSCRIBE_950x190-1.jpg
2325 ms
DERN_banner_2013_SUBSCRIBE_950x190-2.jpg
2587 ms
digital-divide.png
872 ms
ict-education.png
874 ms
laptop-computers.png
1164 ms
facebook.png
1167 ms
twitter.png
1456 ms
googleplus.png
1461 ms
linkedin.png
1627 ms
reddit.png
1747 ms
email.png
2453 ms
computer-games.png
1761 ms
early-childhood.png
1919 ms
multimedia.png
2042 ms
facebook_32.png
2052 ms
twitter_32.png
2212 ms
vimeo_32.png
2338 ms
rss_32.png
2344 ms
email_32.png
2503 ms
linkedin_32.png
2613 ms
ga.js
28 ms
__utm.gif
13 ms
770 ms
nr-892.min.js
42 ms
dern.org.au accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
Form elements do not have associated labels
dern.org.au best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
dern.org.au SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dern.org.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 Dern.org.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.
dern.org.au
Open Graph description is not detected on the main page of DERN. 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: