Tools & Wizards About Us
thejazzcentreuk.co.uk screenshot

Report Summary

  • 27

    Performance

    Renders faster than
    46% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

thejazzcentreuk.co.uk

A Cultural Centre for Jazz | Essex | The Jazz Centre UK

Page Load Speed

2.1 sec in total

First Response

101 ms

Resources Loaded

2 sec

Page Rendered

59 ms

thejazzcentreuk.co.uk screenshot

About Website

Welcome to thejazzcentreuk.co.uk homepage info - get ready to check The Jazz Centre UK best content right away, or after learning these important things about thejazzcentreuk.co.uk

We are a central hub for everything jazz in the UK. The Jazz Centre (UK) actively celebrates all forms jazz including music, dance, fashion art and design in all settings. Based in Southend-on-Sea, Es...

Visit thejazzcentreuk.co.uk

Key Findings

We analyzed Thejazzcentreuk.co.uk page load time and found that the first response time was 101 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

thejazzcentreuk.co.uk performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

39/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

6/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value910 ms

31/100

30%

CLS (Cumulative Layout Shift)

Value0.257

48/100

15%

TTI (Time to Interactive)

Value14.1 s

9/100

10%

Network Requests Diagram

www.thejazzcentreuk.co.uk

101 ms

minified.js

67 ms

focus-within-polyfill.js

66 ms

polyfill.min.js

65 ms

thunderbolt-commons.b70ee867.bundle.min.js

307 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Thejazzcentreuk.co.uk, 58% (38 requests) were made to Static.wixstatic.com and 18% (12 requests) were made to Static.parastorage.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Static.wixstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (64%)

Content Size

1.7 MB

After Optimization

619.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Thejazzcentreuk.co.uk main page is 1.7 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. 50% of websites need less resources to load. HTML takes 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 977.1 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 227.7 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 977.1 kB or 81% of the original size.

Image Optimization

-9%

Potential reduce by 13.7 kB

  • Original 152.6 kB
  • After minification 138.9 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. The Jazz Centre UK images are well optimized though.

JavaScript Optimization

-34%

Potential reduce by 131.4 kB

  • Original 383.9 kB
  • After minification 383.9 kB
  • After compression 252.5 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 131.4 kB or 34% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (20%)

Requests Now

49

After Optimization

39

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The Jazz Centre UK. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.thejazzcentreuk.co.uk

www.thejazzcentreuk.co.uk

101 ms

minified.js

minified.js

67 ms

focus-within-polyfill.js

focus-within-polyfill.js

66 ms

polyfill.min.js

polyfill.min.js

65 ms

thunderbolt-commons.b70ee867.bundle.min.js

thunderbolt-commons.b70ee867.bundle.min.js

307 ms

main.317ed945.bundle.min.js

main.317ed945.bundle.min.js

311 ms

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

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

307 ms

lodash.min.js

lodash.min.js

308 ms

react.production.min.js

react.production.min.js

309 ms

react-dom.production.min.js

react-dom.production.min.js

308 ms

siteTags.bundle.min.js

siteTags.bundle.min.js

309 ms

02c339_6ff09c0d205c4d02bc1d99f95e6e5283~mv2.jpg

02c339_6ff09c0d205c4d02bc1d99f95e6e5283~mv2.jpg

441 ms

bundle.min.js

bundle.min.js

207 ms

02c339_6cb17c5dc0b04e748081fa85b58c6f45~mv2.png

02c339_6cb17c5dc0b04e748081fa85b58c6f45~mv2.png

339 ms

02c339_55b1354675284dbfbd7894a00741e904~mv2.png

02c339_55b1354675284dbfbd7894a00741e904~mv2.png

297 ms

02c339_d7f0526153ed485aaf538b55785c0bd3~mv2.png

02c339_d7f0526153ed485aaf538b55785c0bd3~mv2.png

452 ms

02c339_f83ccfcd12cd4990aee15e8220f7eed5~mv2.png

02c339_f83ccfcd12cd4990aee15e8220f7eed5~mv2.png

420 ms

02c339_9fa9988d71a14a92b61d5db37d0b73fa~mv2.png

02c339_9fa9988d71a14a92b61d5db37d0b73fa~mv2.png

392 ms

02c339_d4fd5954d8944229aa01fe4b6781f6ff~mv2.png

02c339_d4fd5954d8944229aa01fe4b6781f6ff~mv2.png

496 ms

02c339_59c354683e5a420caf8ed88a3d1c6101~mv2.png

02c339_59c354683e5a420caf8ed88a3d1c6101~mv2.png

568 ms

02c339_49587bea09b34e70b1c16a1155a0917c~mv2.png

02c339_49587bea09b34e70b1c16a1155a0917c~mv2.png

599 ms

02c339_b4e516acc5b34a5e88f7efb7b8463c4a~mv2.png

02c339_b4e516acc5b34a5e88f7efb7b8463c4a~mv2.png

709 ms

02c339_d528b783012b4f74861f489182f0153a~mv2.png

02c339_d528b783012b4f74861f489182f0153a~mv2.png

606 ms

02c339_7b4d15a4dd83486281f5fd90e520a020~mv2.png

02c339_7b4d15a4dd83486281f5fd90e520a020~mv2.png

708 ms

02c339_da1974155afb460198a48e52f072c159~mv2.png

02c339_da1974155afb460198a48e52f072c159~mv2.png

726 ms

02c339_cc8b46a7e9864e43a96c7325ee31cbdd~mv2.png

02c339_cc8b46a7e9864e43a96c7325ee31cbdd~mv2.png

810 ms

02c339_5272de0cc8c64919b2fa54201be094e0~mv2.png

02c339_5272de0cc8c64919b2fa54201be094e0~mv2.png

955 ms

02c339_08225e6a1c1549f6b0eae748208f3f12~mv2.jpg

02c339_08225e6a1c1549f6b0eae748208f3f12~mv2.jpg

794 ms

02c339_afb8f0e1e01a474599e7820da4ce28a4~mv2.jpg

02c339_afb8f0e1e01a474599e7820da4ce28a4~mv2.jpg

925 ms

02c339_938d54a7460147cdabe304ae73c261b2~mv2.webp

02c339_938d54a7460147cdabe304ae73c261b2~mv2.webp

881 ms

02c339_938d54a7460147cdabe304ae73c261b2~mv2.webp

02c339_938d54a7460147cdabe304ae73c261b2~mv2.webp

893 ms

02c339_f52e0a730f5a4ecbadabfb9393df9b6d~mv2.webp

02c339_f52e0a730f5a4ecbadabfb9393df9b6d~mv2.webp

990 ms

02c339_f52e0a730f5a4ecbadabfb9393df9b6d~mv2.webp

02c339_f52e0a730f5a4ecbadabfb9393df9b6d~mv2.webp

1035 ms

02c339_6ff09c0d205c4d02bc1d99f95e6e5283~mv2.webp

02c339_6ff09c0d205c4d02bc1d99f95e6e5283~mv2.webp

990 ms

02c339_6ff09c0d205c4d02bc1d99f95e6e5283~mv2.webp

02c339_6ff09c0d205c4d02bc1d99f95e6e5283~mv2.webp

1015 ms

02c339_7ba8d406cb3f4d8e98e32053757b080b~mv2.webp

02c339_7ba8d406cb3f4d8e98e32053757b080b~mv2.webp

1135 ms

02c339_7ba8d406cb3f4d8e98e32053757b080b~mv2.webp

02c339_7ba8d406cb3f4d8e98e32053757b080b~mv2.webp

1151 ms

53143a_15ab46200bad498fb38705d03d5c7a44~mv2.jpg

53143a_15ab46200bad498fb38705d03d5c7a44~mv2.jpg

1256 ms

02c339_d852af1a6473442bb863f64a73abccbe~mv2.jpg

02c339_d852af1a6473442bb863f64a73abccbe~mv2.jpg

1170 ms

02c339_41303795b7cb4ba19848a374808ce7d1~mv2.jpg

02c339_41303795b7cb4ba19848a374808ce7d1~mv2.jpg

1287 ms

02c339_db4f523eaf68489ea84de7562afb71c4~mv2.jpg

02c339_db4f523eaf68489ea84de7562afb71c4~mv2.jpg

1283 ms

Google-Reviews.png

Google-Reviews.png

1311 ms

Heritage-Fund-Logo.png

Heritage-Fund-Logo.png

1395 ms

SCC%20Logo.png

SCC%20Logo.png

1345 ms

SAVS-Logo-Transparent-No-Strapline.png

SAVS-Logo-Transparent-No-Strapline.png

1439 ms

Dean%20Wilson%20Logo_DW%20Blue%20Logo_No%20Register%20mark.png

Dean%20Wilson%20Logo_DW%20Blue%20Logo_No%20Register%20mark.png

1458 ms

file.woff

file.woff

1184 ms

file.woff

file.woff

1204 ms

116 ms

117 ms

117 ms

113 ms

110 ms

109 ms

149 ms

147 ms

145 ms

140 ms

143 ms

141 ms

file.woff

file.woff

1017 ms

file.woff

file.woff

976 ms

deprecation-en.v5.html

deprecation-en.v5.html

7 ms

bolt-performance

bolt-performance

15 ms

deprecation-style.v5.css

deprecation-style.v5.css

9 ms

right-arrow.svg

right-arrow.svg

7 ms

Accessibility Review

thejazzcentreuk.co.uk accessibility score

95

Accessibility Issues

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

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

thejazzcentreuk.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

thejazzcentreuk.co.uk SEO score

97

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

High

Tap targets are not sized appropriately

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 Thejazzcentreuk.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 Thejazzcentreuk.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

thejazzcentreuk.co.uk

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