Tools & Wizards About Us
derbygrammar.org screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

derbygrammar.org

Bringing education to life | Independent Day School | Derby Grammar School

Page Load Speed

1.8 sec in total

First Response

50 ms

Resources Loaded

1.5 sec

Page Rendered

264 ms

derbygrammar.org screenshot

About Website

Welcome to derbygrammar.org homepage info - get ready to check Derby Grammar best content right away, or after learning these important things about derbygrammar.org

Derby Grammar School is Derbyshire’s leading independent day school for boys aged 4 to 18 and girls aged 16 to 18.

Visit derbygrammar.org

Key Findings

We analyzed Derbygrammar.org page load time and found that the first response time was 50 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

derbygrammar.org performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

69/100

10%

LCP (Largest Contentful Paint)

Value16.6 s

0/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value440 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value11.8 s

17/100

10%

Network Requests Diagram

derbygrammar.org

50 ms

www.derbygrammar.org

629 ms

rocket-loader.min.js

5 ms

intro-logo.png

22 ms

wSprite.png

94 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 88% of them (22 requests) were addressed to the original Derbygrammar.org, 4% (1 request) were made to Googletagmanager.com and 4% (1 request) were made to Tag.simpli.fi. The less responsive or slowest element that took the longest time to load (735 ms) relates to the external source Cdnjs.cloudflare.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 444.2 kB (21%)

Content Size

2.1 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Derbygrammar.org main page is 2.1 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. 20% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 444.2 kB

  • Original 512.9 kB
  • After minification 512.9 kB
  • After compression 68.8 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 444.2 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 1.5 MB
  • After minification 1.5 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. Derby Grammar images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 29 B

  • Original 69.2 kB
  • After minification 69.2 kB
  • After compression 69.1 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 3 (13%)

Requests Now

23

After Optimization

20

  • Images
  • JavaScript

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Derby Grammar. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

derbygrammar.org

derbygrammar.org

50 ms

www.derbygrammar.org

www.derbygrammar.org

629 ms

rocket-loader.min.js

rocket-loader.min.js

5 ms

intro-logo.png

intro-logo.png

22 ms

wSprite.png

wSprite.png

94 ms

oval.svg

oval.svg

30 ms

Juniors-2017-12-440x360.jpg

Juniors-2017-12-440x360.jpg

32 ms

homepage-discover-senior.jpg

homepage-discover-senior.jpg

26 ms

homepage-discover-sixth-form.jpg

homepage-discover-sixth-form.jpg

30 ms

Mr%20Hilliam%20.jpg

Mr%20Hilliam%20.jpg

41 ms

homepage-excitement.jpg

homepage-excitement.jpg

42 ms

homepage-friendship.jpg

homepage-friendship.jpg

51 ms

homepage-discovery.jpg

homepage-discovery.jpg

52 ms

homepage-achievments.jpg

homepage-achievments.jpg

47 ms

Screenshot%202022-03-07%20at%2022_10_18-min.jpg

Screenshot%202022-03-07%20at%2022_10_18-min.jpg

70 ms

hero-4.jpg

hero-4.jpg

67 ms

map.jpg

map.jpg

63 ms

dofe.png

dofe.png

65 ms

partner-2.png

partner-2.png

69 ms

Forest-School.png

Forest-School.png

90 ms

featured-item.jpg

featured-item.jpg

81 ms

featured-logo.png

featured-logo.png

105 ms

gtm.js

gtm.js

93 ms

7e644230-9541-0137-e92d-06a9ed4ca31b

7e644230-9541-0137-e92d-06a9ed4ca31b

47 ms

polyfill.js

polyfill.js

735 ms

Accessibility Review

derbygrammar.org accessibility score

89

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

[aria-*] attributes do not match their roles

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

derbygrammar.org best practices score

75

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

derbygrammar.org SEO score

84

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

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 Derbygrammar.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 Derbygrammar.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

derbygrammar.org

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