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blitzschool.co.uk screenshot

Report Summary

  • 47

    Performance

    Renders faster than
    65% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

blitzschool.co.uk

Home | Blitz School WW2 primary history workshop for KS1 & KS2

Page Load Speed

986 ms in total

First Response

135 ms

Resources Loaded

796 ms

Page Rendered

55 ms

blitzschool.co.uk screenshot

About Website

Visit blitzschool.co.uk now to see the best up-to-date Blitz School content and also check out these interesting facts you probably never knew about blitzschool.co.uk

A WW2 primary history workshop for UK primary schools with an interactive timeline, artefact handling, blackout, first aid and stirrup pump activities for Key Stage 1 and Key Stage 2

Visit blitzschool.co.uk

Key Findings

We analyzed Blitzschool.co.uk page load time and found that the first response time was 135 ms and then it took 851 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

blitzschool.co.uk performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

72/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

24/100

25%

SI (Speed Index)

Value2.4 s

98/100

10%

TBT (Total Blocking Time)

Value800 ms

36/100

30%

CLS (Cumulative Layout Shift)

Value0.15

76/100

15%

TTI (Time to Interactive)

Value10.9 s

21/100

10%

Network Requests Diagram

www.blitzschool.co.uk

135 ms

minified.js

33 ms

focus-within-polyfill.js

26 ms

polyfill.min.js

62 ms

counter.js

112 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Blitzschool.co.uk, 39% (16 requests) were made to Static.parastorage.com and 29% (12 requests) were made to Sentry-next.wixpress.com. The less responsive or slowest element that took the longest time to load (376 ms) relates to the external source Static.wixstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 304.5 kB (41%)

Content Size

747.8 kB

After Optimization

443.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Blitzschool.co.uk main page is 747.8 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. 30% of websites need less resources to load. HTML takes 339.6 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 255.5 kB

  • Original 339.6 kB
  • After minification 337.8 kB
  • After compression 84.1 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 255.5 kB or 75% of the original size.

Image Optimization

-1%

Potential reduce by 874 B

  • Original 91.9 kB
  • After minification 91.0 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. Blitz School images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 48.2 kB

  • Original 316.3 kB
  • After minification 316.3 kB
  • After compression 268.2 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 48.2 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (31%)

Requests Now

36

After Optimization

25

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blitz 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 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.blitzschool.co.uk

www.blitzschool.co.uk

135 ms

minified.js

minified.js

33 ms

focus-within-polyfill.js

focus-within-polyfill.js

26 ms

polyfill.min.js

polyfill.min.js

62 ms

counter.js

counter.js

112 ms

thunderbolt-commons.db35ef3a.bundle.min.js

thunderbolt-commons.db35ef3a.bundle.min.js

90 ms

main.fc46e9bd.bundle.min.js

main.fc46e9bd.bundle.min.js

92 ms

main.renderer.1d21f023.bundle.min.js

main.renderer.1d21f023.bundle.min.js

92 ms

lodash.min.js

lodash.min.js

105 ms

react.production.min.js

react.production.min.js

90 ms

react-dom.production.min.js

react-dom.production.min.js

92 ms

siteTags.bundle.min.js

siteTags.bundle.min.js

103 ms

opt%20logo-1.jpg

opt%20logo-1.jpg

277 ms

bundle.min.js

bundle.min.js

54 ms

quality-assurance-mark-large.png

quality-assurance-mark-large.png

242 ms

WW2-primary-school-workshop-first-aid.jpg

WW2-primary-school-workshop-first-aid.jpg

216 ms

girl-medals-vignetted.jpg

girl-medals-vignetted.jpg

250 ms

WW2-workshop-for-primary-schools.jpg

WW2-workshop-for-primary-schools.jpg

212 ms

WW2-primary-school-lesson-light.jpg

WW2-primary-school-lesson-light.jpg

212 ms

DSC_0030-(2).jpg

DSC_0030-(2).jpg

376 ms

t.php

t.php

108 ms

90 ms

94 ms

150 ms

150 ms

88 ms

88 ms

147 ms

146 ms

146 ms

144 ms

149 ms

148 ms

p0A1C4_gK5NzKtuGSwNurQ.woff

p0A1C4_gK5NzKtuGSwNurQ.woff

4 ms

h3r77AwDsldr1E_2g4qqGBsxEYwM7FgeyaSgU71cLG0.woff

h3r77AwDsldr1E_2g4qqGBsxEYwM7FgeyaSgU71cLG0.woff

4 ms

aDjpMND83pDErGXlVEr-SRsxEYwM7FgeyaSgU71cLG0.woff

aDjpMND83pDErGXlVEr-SRsxEYwM7FgeyaSgU71cLG0.woff

8 ms

9VWMTeb5jtXkNoTv949NpRsxEYwM7FgeyaSgU71cLG0.woff

9VWMTeb5jtXkNoTv949NpRsxEYwM7FgeyaSgU71cLG0.woff

3 ms

deprecation-en.v5.html

deprecation-en.v5.html

4 ms

bolt-performance

bolt-performance

20 ms

deprecation-style.v5.css

deprecation-style.v5.css

7 ms

right-arrow.svg

right-arrow.svg

5 ms

Accessibility Review

blitzschool.co.uk accessibility score

98

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

Best Practices

blitzschool.co.uk 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

Page has valid source maps

SEO Factors

blitzschool.co.uk 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 Blitzschool.co.uk 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 Blitzschool.co.uk 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

blitzschool.co.uk

Open Graph data is detected on the main page of Blitz School. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: