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kingsmathsschool.com screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

kingsmathsschool.com

Welcome to King's Maths School - Kings Maths School

Page Load Speed

4.6 sec in total

First Response

698 ms

Resources Loaded

3.2 sec

Page Rendered

713 ms

kingsmathsschool.com screenshot

About Website

Visit kingsmathsschool.com now to see the best up-to-date Kings Maths School content and also check out these interesting facts you probably never knew about kingsmathsschool.com

King's College London Mathematics School is run in partnership with King's College London University, to provide high quality mathematics education in the heart of London.

Visit kingsmathsschool.com

Key Findings

We analyzed Kingsmathsschool.com page load time and found that the first response time was 698 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

kingsmathsschool.com performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value8.2 s

2/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value520 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0.081

94/100

15%

TTI (Time to Interactive)

Value19.5 s

2/100

10%

Network Requests Diagram

www.kingsmathsschool.com

698 ms

OtAutoBlock.js

45 ms

otSDKStub.js

56 ms

css

40 ms

runtime.a0986584391fc5f1c67a.js

277 ms

Our browser made a total of 24 requests to load all elements on the main page. We found that 50% of them (12 requests) were addressed to the original Kingsmathsschool.com, 17% (4 requests) were made to Fonts.gstatic.com and 13% (3 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Kingsmathsschool.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 568.0 kB (10%)

Content Size

5.6 MB

After Optimization

5.0 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Kingsmathsschool.com main page is 5.6 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. 20% of websites need less resources to load. Images take 4.9 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 379.8 kB

  • Original 453.1 kB
  • After minification 453.1 kB
  • After compression 73.3 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 379.8 kB or 84% of the original size.

Image Optimization

-3%

Potential reduce by 148.7 kB

  • Original 4.9 MB
  • After minification 4.8 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. Kings Maths School images are well optimized though.

JavaScript Optimization

-26%

Potential reduce by 39.5 kB

  • Original 153.6 kB
  • After minification 153.6 kB
  • After compression 114.1 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 39.5 kB or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (44%)

Requests Now

18

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kings Maths School. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.kingsmathsschool.com

www.kingsmathsschool.com

698 ms

OtAutoBlock.js

OtAutoBlock.js

45 ms

otSDKStub.js

otSDKStub.js

56 ms

css

css

40 ms

runtime.a0986584391fc5f1c67a.js

runtime.a0986584391fc5f1c67a.js

277 ms

vendor.28233c0047c90d7ab1c2.js

vendor.28233c0047c90d7ab1c2.js

1104 ms

7facf4ae-9bc7-4031-bbb4-a1283b51dba6.json

7facf4ae-9bc7-4031-bbb4-a1283b51dba6.json

102 ms

polyfill.min.js

polyfill.min.js

440 ms

date-time-format-timezone-complete-min.js

date-time-format-timezone-complete-min.js

44 ms

4.d37bab871ebc9dbb8935.js

4.d37bab871ebc9dbb8935.js

276 ms

app.7ef384253d35b65fb94e.js

app.7ef384253d35b65fb94e.js

1010 ms

date-time-format-timezone-complete-min.js

date-time-format-timezone-complete-min.js

29 ms

location

location

30 ms

kcl-ms-logo.jpg

kcl-ms-logo.jpg

318 ms

Kings-Maths-School-banner-21.x78203417.jpg

Kings-Maths-School-banner-21.x78203417.jpg

693 ms

royal-observatory-summer-school-2023.xcf5e2afb.jpg

royal-observatory-summer-school-2023.xcf5e2afb.jpg

594 ms

charlotte-olympiad-flag-2023.x21ac9750.jpeg

charlotte-olympiad-flag-2023.x21ac9750.jpeg

1266 ms

maths-school-1466.xb8bc1956.JPG

maths-school-1466.xb8bc1956.JPG

498 ms

nice-shot-of-front-of-school-prospectus.xb803b14a.jpg

nice-shot-of-front-of-school-prospectus.xb803b14a.jpg

598 ms

kcl-logo.svg

kcl-logo.svg

596 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVc.ttf

22 ms

flUhRq6tzZclQEJ-Vdg-IuiaDsNZ.ttf

flUhRq6tzZclQEJ-Vdg-IuiaDsNZ.ttf

34 ms

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyosBO5Xk.ttf

ieVo2ZhZI2eCN5jzbjEETS9weq8-_d6T_POl0fRJeyWyosBO5Xk.ttf

34 ms

LDI1apSQOAYtSuYWp8ZhfYe8XsLO.ttf

LDI1apSQOAYtSuYWp8ZhfYe8XsLO.ttf

36 ms

Accessibility Review

kingsmathsschool.com accessibility score

90

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

[role] values are not valid

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

kingsmathsschool.com 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

High

Missing source maps for large first-party JavaScript

SEO Factors

kingsmathsschool.com SEO score

100

Search Engine Optimization Advices

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 Kingsmathsschool.com 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 Kingsmathsschool.com 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

kingsmathsschool.com

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