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ista.com.au screenshot

Report Summary

  • 21

    Performance

    Renders faster than
    39% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

ista.com.au

NSTA Central

Page Load Speed

11.8 sec in total

First Response

86 ms

Resources Loaded

10.3 sec

Page Rendered

1.4 sec

ista.com.au screenshot

About Website

Visit ista.com.au now to see the best up-to-date Ista content for Australia and also check out these interesting facts you probably never knew about ista.com.au

Visit ista.com.au

Key Findings

We analyzed Ista.com.au page load time and found that the first response time was 86 ms and then it took 11.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

ista.com.au performance score

21

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value9.4 s

0/100

25%

SI (Speed Index)

Value16.0 s

0/100

10%

TBT (Total Blocking Time)

Value1,280 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.027

100/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

Network Requests Diagram

ista.com.au

86 ms

www.central.nsta.edu.au

192 ms

central.nsta.edu.au

706 ms

js

74 ms

style.min.css

266 ms

Our browser made a total of 98 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Ista.com.au, 93% (91 requests) were made to Central.nsta.edu.au and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3.4 sec) relates to the external source Nsta.edu.au.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.6 MB (36%)

Content Size

7.1 MB

After Optimization

4.5 MB

  • Images
  • JavaScript
  • CSS

In fact, the total size of Ista.com.au main page is 7.1 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. 45% of websites need less resources to load. Images take 6.7 MB which makes up the majority of the site volume.

HTML Optimization

-0%

Potential reduce by -8 B

  • Original 0 B

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. This web page is already compressed.

Image Optimization

-37%

Potential reduce by 2.5 MB

  • Original 6.7 MB
  • After minification 4.2 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. Obviously, Ista needs image optimization as it can save up to 2.5 MB or 37% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-5%

Potential reduce by 16.9 kB

  • Original 320.9 kB
  • After minification 320.4 kB
  • After compression 304.0 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

-75%

Potential reduce by 36.7 kB

  • Original 48.7 kB
  • After minification 37.6 kB
  • After compression 12.0 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. Ista.com.au needs all CSS files to be minified and compressed as it can save up to 36.7 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 50 (53%)

Requests Now

94

After Optimization

44

  • Images
  • JavaScript
  • CSS

The browser has sent 94 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ista. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 37 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ista.com.au

ista.com.au

86 ms

www.central.nsta.edu.au

www.central.nsta.edu.au

192 ms

central.nsta.edu.au

central.nsta.edu.au

706 ms

js

js

74 ms

style.min.css

style.min.css

266 ms

styles.css

styles.css

513 ms

tutor-icon.min.css

tutor-icon.min.css

201 ms

tutor.min.css

tutor.min.css

328 ms

tutor-front.min.css

tutor-front.min.css

256 ms

woocommerce-layout.css

woocommerce-layout.css

262 ms

woocommerce.css

woocommerce.css

401 ms

style.css

style.css

643 ms

css

css

33 ms

owl.carousel.min.css

owl.carousel.min.css

452 ms

jquery.fancybox-1.3.4.min.css

jquery.fancybox-1.3.4.min.css

453 ms

animate.min.css

animate.min.css

519 ms

style.css

style.css

599 ms

frontend-gtag.min.js

frontend-gtag.min.js

585 ms

jquery.min.js

jquery.min.js

693 ms

jquery-migrate.min.js

jquery-migrate.min.js

652 ms

jquery.blockUI.min.js

jquery.blockUI.min.js

834 ms

add-to-cart.min.js

add-to-cart.min.js

901 ms

js.cookie.min.js

js.cookie.min.js

899 ms

woocommerce.min.js

woocommerce.min.js

900 ms

wc-blocks.css

wc-blocks.css

948 ms

hooks.min.js

hooks.min.js

948 ms

i18n.min.js

i18n.min.js

1025 ms

main.js

main.js

1075 ms

index.js

index.js

1077 ms

index.js

index.js

1091 ms

tutor.min.js

tutor.min.js

1367 ms

quicktags.min.js

quicktags.min.js

1142 ms

core.min.js

core.min.js

1220 ms

mouse.min.js

mouse.min.js

1261 ms

sortable.min.js

sortable.min.js

1269 ms

jquery.ui.touch-punch.js

jquery.ui.touch-punch.js

1286 ms

SocialShare.min.js

SocialShare.min.js

1342 ms

tutor-front.min.js

tutor-front.min.js

1478 ms

datepicker.min.js

datepicker.min.js

1451 ms

child-custom.js

child-custom.js

1463 ms

api.js

api.js

100 ms

owl.carousel.min.js

owl.carousel.min.js

1538 ms

jquery.fancybox-1.3.4.min.js

jquery.fancybox-1.3.4.min.js

1456 ms

navigation.js

navigation.js

1361 ms

isotope.pkgd.min.js

isotope.pkgd.min.js

1448 ms

waypoint.min.js

waypoint.min.js

1457 ms

jquery.counterup.min.js

jquery.counterup.min.js

1397 ms

custom.min.js

custom.min.js

1403 ms

sourcebuster.min.js

sourcebuster.min.js

1368 ms

order-attribution.min.js

order-attribution.min.js

1390 ms

wp-polyfill.min.js

wp-polyfill.min.js

1441 ms

index.js

index.js

1397 ms

cropped-NSTA-Ashmore_Homepage-Banner.jpg

cropped-NSTA-Ashmore_Homepage-Banner.jpg

3404 ms

logo-nstacentral.png

logo-nstacentral.png

1117 ms

right-arrow.png

right-arrow.png

1203 ms

right-arrow-dark.png

right-arrow-dark.png

1208 ms

RIIWHS205E-RIIWHS302E-NSTA-440x304.png

RIIWHS205E-RIIWHS302E-NSTA-440x304.png

1381 ms

CPPSEC3110_NSTA-440x304.png

CPPSEC3110_NSTA-440x304.png

1380 ms

SITHFAB002_NSTA-Course-1-440x304.png

SITHFAB002_NSTA-Course-1-440x304.png

1362 ms

CPP30619-Course-3-440x304.png

CPP30619-Course-3-440x304.png

1294 ms

CPP40719-Course-440x304.png

CPP40719-Course-440x304.png

1350 ms

CPP20218-Course-440x304.png

CPP20218-Course-440x304.png

1350 ms

CPP31418-Course-440x304.png

CPP31418-Course-440x304.png

1453 ms

CPPSEC3116_NSTA-440x304.png

CPPSEC3116_NSTA-440x304.png

1519 ms

CPPSEC3115_NSTA-440x304.png

CPPSEC3115_NSTA-440x304.png

1460 ms

HLTAID014-Course-440x304.png

HLTAID014-Course-440x304.png

1408 ms

HLTAID013-Course-440x304.png

HLTAID013-Course-440x304.png

1456 ms

HLTAID012_Course-1-440x304.png

HLTAID012_Course-1-440x304.png

1447 ms

footscray-Home-Blocks-1.jpg

footscray-Home-Blocks-1.jpg

1517 ms

NSTA-Footscray-Training.png

NSTA-Footscray-Training.png

1786 ms

NSTA-Footscray-Training-2.png

NSTA-Footscray-Training-2.png

1810 ms

Eleni-Yannacaros.jpg

Eleni-Yannacaros.jpg

1637 ms

Ray-Parmenter.jpg

Ray-Parmenter.jpg

1659 ms

Mary-Meehan.jpg

Mary-Meehan.jpg

1675 ms

Gary-Schellebeck.jpg

Gary-Schellebeck.jpg

1770 ms

security-canine-handlers-course-NSTA-Blog-440x304.png

security-canine-handlers-course-NSTA-Blog-440x304.png

1866 ms

crowd-controller-licence-NSTA-Blog-400x304.png

crowd-controller-licence-NSTA-Blog-400x304.png

1786 ms

Certificate-II-in-Security-Operations-NSTA-440x304.png

Certificate-II-in-Security-Operations-NSTA-440x304.png

1853 ms

002-money.png

002-money.png

1661 ms

policeman.png

policeman.png

1706 ms

001-user.png

001-user.png

1736 ms

big-bg.png

big-bg.png

2040 ms

NSTA-Footscray-Traning-1.png

NSTA-Footscray-Traning-1.png

2115 ms

cta-bg.png

cta-bg.png

1902 ms

registered-1.png

registered-1.png

1763 ms

NRT-logo-300x239-1-2.png

NRT-logo-300x239-1-2.png

1774 ms

api.min.js

api.min.js

72 ms

recaptcha__en.js

recaptcha__en.js

28 ms

1-300x80.png

1-300x80.png

1753 ms

asial.png

asial.png

1846 ms

NSTA-Central-Showcase.png

NSTA-Central-Showcase.png

2151 ms

Jester-events-logo-2-300x250.png

Jester-events-logo-2-300x250.png

1787 ms

Procom-Logo-300x49.jpeg

Procom-Logo-300x49.jpeg

1877 ms

phone.svg

phone.svg

1932 ms

message.svg

message.svg

1769 ms

location.svg

location.svg

1725 ms

commerce.png

commerce.png

1777 ms

woocommerce-smallscreen.css

woocommerce-smallscreen.css

87 ms

Accessibility Review

ista.com.au accessibility score

78

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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>).

Best Practices

ista.com.au best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

ista.com.au SEO score

75

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

High

Tap targets are not sized appropriately

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 Ista.com.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 Ista.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

ista.com.au

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