Tools & Wizards About Us
boltonschool.org screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

boltonschool.org

Welcome to Bolton School

Page Load Speed

1.6 sec in total

First Response

135 ms

Resources Loaded

1.2 sec

Page Rendered

318 ms

boltonschool.org screenshot

About Website

Visit boltonschool.org now to see the best up-to-date Bolton School content for United Kingdom and also check out these interesting facts you probably never knew about boltonschool.org

Bolton School - independent day school in Greater Manchester on the border with Lancashire. It comprises a nursery, infant school, junior and senior schools with sixth forms.

Visit boltonschool.org

Key Findings

We analyzed Boltonschool.org page load time and found that the first response time was 135 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

boltonschool.org performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

61/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value8.6 s

17/100

10%

TBT (Total Blocking Time)

Value630 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.041

99/100

15%

TTI (Time to Interactive)

Value7.5 s

48/100

10%

Network Requests Diagram

boltonschool.org

135 ms

www.boltonschool.org

569 ms

p.css

19 ms

rocket-loader.min.js

5 ms

email-decode.min.js

37 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 68% of them (15 requests) were addressed to the original Boltonschool.org, 23% (5 requests) were made to Use.typekit.net and 5% (1 request) were made to P.typekit.net. The less responsive or slowest element that took the longest time to load (569 ms) belongs to the original domain Boltonschool.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 279.0 kB (51%)

Content Size

549.5 kB

After Optimization

270.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Boltonschool.org main page is 549.5 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. 40% of websites need less resources to load. HTML takes 328.3 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 278.8 kB

  • Original 328.3 kB
  • After minification 328.3 kB
  • After compression 49.6 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 278.8 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 24.2 kB
  • After minification 24.2 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. Bolton School images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 281 B

  • Original 196.9 kB
  • After minification 196.9 kB
  • After compression 196.7 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

-0%

Potential reduce by 0 B

  • Original 5 B

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.

Requests Breakdown

Number of requests can be reduced by 7 (64%)

Requests Now

11

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bolton 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 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

boltonschool.org

boltonschool.org

135 ms

www.boltonschool.org

www.boltonschool.org

569 ms

p.css

p.css

19 ms

rocket-loader.min.js

rocket-loader.min.js

5 ms

email-decode.min.js

email-decode.min.js

37 ms

global.output.js

global.output.js

47 ms

output.js

output.js

52 ms

Homepage.output.js

Homepage.output.js

55 ms

output.js

output.js

384 ms

intSchoolsCookieManager.min.js

intSchoolsCookieManager.min.js

86 ms

logo.png

logo.png

25 ms

logo-black-big.png

logo-black-big.png

394 ms

Avenir-Roman.woff

Avenir-Roman.woff

35 ms

Avenir-Medium.woff

Avenir-Medium.woff

45 ms

Avenir-Light.woff

Avenir-Light.woff

52 ms

Avenir-Heavy.woff

Avenir-Heavy.woff

63 ms

d

d

33 ms

d

d

54 ms

d

d

71 ms

d

d

72 ms

d

d

91 ms

global.output.js

global.output.js

35 ms

Accessibility Review

boltonschool.org accessibility score

90

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

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

Some elements have a [tabindex] value greater than 0

Best Practices

boltonschool.org best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

boltonschool.org SEO score

93

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Boltonschool.org 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 Boltonschool.org 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

boltonschool.org

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