Tools & Wizards About Us
mathscentre.co.nz screenshot

Report Summary

  • 87

    Performance

    Renders faster than
    90% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

mathscentre.co.nz

Maths Centre • Home

Page Load Speed

4 sec in total

First Response

634 ms

Resources Loaded

3.2 sec

Page Rendered

143 ms

mathscentre.co.nz screenshot

About Website

Click here to check amazing Maths Centre content for New Zealand. Otherwise, check out these important facts you probably never knew about mathscentre.co.nz

Maths Centre - the access point for quality mathematical videos, textbooks and maths games

Visit mathscentre.co.nz

Key Findings

We analyzed Mathscentre.co.nz page load time and found that the first response time was 634 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

mathscentre.co.nz performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

58/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

84/100

25%

SI (Speed Index)

Value5.4 s

56/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.046

99/100

15%

TTI (Time to Interactive)

Value3.1 s

95/100

10%

Network Requests Diagram

mathscentre.co.nz

634 ms

www.mathscentre.co.nz

960 ms

mathscentral.css

607 ms

sIFR-screen.css

413 ms

sifr.js

641 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 92% of them (24 requests) were addressed to the original Mathscentre.co.nz, 8% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Mathscentre.co.nz.

Page Optimization Overview & Recommendations

Page size can be reduced by 32.7 kB (27%)

Content Size

121.5 kB

After Optimization

88.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mathscentre.co.nz main page is 121.5 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. 15% of websites need less resources to load. Images take 59.1 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 8.1 kB

  • Original 11.7 kB
  • After minification 10.4 kB
  • After compression 3.5 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. This page needs HTML code to be minified as it can gain 1.2 kB, which is 11% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 8.1 kB or 70% of the original size.

Image Optimization

-0%

Potential reduce by 86 B

  • Original 59.1 kB
  • After minification 59.0 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. Maths Centre images are well optimized though.

JavaScript Optimization

-33%

Potential reduce by 11.7 kB

  • Original 35.0 kB
  • After minification 34.6 kB
  • After compression 23.3 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 11.7 kB or 33% of the original size.

CSS Optimization

-81%

Potential reduce by 12.8 kB

  • Original 15.8 kB
  • After minification 11.7 kB
  • After compression 3.0 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. Mathscentre.co.nz needs all CSS files to be minified and compressed as it can save up to 12.8 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (33%)

Requests Now

24

After Optimization

16

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Maths Centre. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

mathscentre.co.nz

mathscentre.co.nz

634 ms

www.mathscentre.co.nz

www.mathscentre.co.nz

960 ms

mathscentral.css

mathscentral.css

607 ms

sIFR-screen.css

sIFR-screen.css

413 ms

sifr.js

sifr.js

641 ms

swfobject.js

swfobject.js

434 ms

bg.gif

bg.gif

241 ms

submenuL.gif

submenuL.gif

241 ms

submenuR.gif

submenuR.gif

242 ms

logoRed.gif

logoRed.gif

615 ms

advertTemp.jpg

advertTemp.jpg

601 ms

menuRed.gif

menuRed.gif

800 ms

joinMailing.gif

joinMailing.gif

455 ms

signUp.gif

signUp.gif

458 ms

blob.php

blob.php

974 ms

blob.php

blob.php

971 ms

blob.php

blob.php

976 ms

categoryGames.jpg

categoryGames.jpg

800 ms

blob.php

blob.php

1082 ms

pickTopic.gif

pickTopic.gif

1012 ms

grav.gif

grav.gif

1014 ms

topicMenuBg.gif

topicMenuBg.gif

1178 ms

topicMenuDivider.gif

topicMenuDivider.gif

1183 ms

foot.gif

foot.gif

1183 ms

ga.js

ga.js

6 ms

__utm.gif

__utm.gif

34 ms

Accessibility Review

mathscentre.co.nz accessibility score

59

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

mathscentre.co.nz best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

mathscentre.co.nz SEO score

75

Search Engine Optimization Advices

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 Mathscentre.co.nz 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 Mathscentre.co.nz 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

mathscentre.co.nz

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