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mostlyjazz.co.uk screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

mostlyjazz.co.uk

Mostly Jazz Funk & Soul Festival | 11 – 13 July 2025

Page Load Speed

3.4 sec in total

First Response

395 ms

Resources Loaded

2.3 sec

Page Rendered

747 ms

mostlyjazz.co.uk screenshot

About Website

Welcome to mostlyjazz.co.uk homepage info - get ready to check Mostly Jazz best content for United Kingdom right away, or after learning these important things about mostlyjazz.co.uk

11 - 13 July 2025, Mostly Jazz Funk & Soul Festival in Birmingham will be celebrating ground-breaking, innovative UK music alongside international acts!

Visit mostlyjazz.co.uk

Key Findings

We analyzed Mostlyjazz.co.uk page load time and found that the first response time was 395 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

mostlyjazz.co.uk performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

69/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value5.8 s

49/100

10%

TBT (Total Blocking Time)

Value480 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.6 s

46/100

10%

Network Requests Diagram

mostlyjazz.co.uk

395 ms

gtm.js

46 ms

style-main.css

158 ms

style.min.css

306 ms

mediaelementplayer-legacy.min.css

232 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 97% of them (29 requests) were addressed to the original Mostlyjazz.co.uk, 3% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (615 ms) belongs to the original domain Mostlyjazz.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 108.5 kB (24%)

Content Size

459.1 kB

After Optimization

350.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mostlyjazz.co.uk main page is 459.1 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. 25% of websites need less resources to load. Javascripts take 303.7 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 77.5 kB

  • Original 93.4 kB
  • After minification 82.9 kB
  • After compression 15.9 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. This page needs HTML code to be minified as it can gain 10.5 kB, which is 11% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 77.5 kB or 83% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 7.3 kB
  • After minification 7.3 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. Mostly Jazz images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 30.9 kB

  • Original 303.7 kB
  • After minification 303.7 kB
  • After compression 272.8 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 158 B

  • Original 54.7 kB
  • After minification 54.7 kB
  • After compression 54.5 kB

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. Mostlyjazz.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 25 (86%)

Requests Now

29

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mostly Jazz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

mostlyjazz.co.uk

mostlyjazz.co.uk

395 ms

gtm.js

gtm.js

46 ms

style-main.css

style-main.css

158 ms

style.min.css

style.min.css

306 ms

mediaelementplayer-legacy.min.css

mediaelementplayer-legacy.min.css

232 ms

wp-mediaelement.min.css

wp-mediaelement.min.css

231 ms

jquery.min.js

jquery.min.js

310 ms

jquery-migrate.min.js

jquery-migrate.min.js

236 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

235 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

308 ms

wp-polyfill.min.js

wp-polyfill.min.js

309 ms

hooks.min.js

hooks.min.js

348 ms

i18n.min.js

i18n.min.js

348 ms

url.min.js

url.min.js

379 ms

api-fetch.min.js

api-fetch.min.js

380 ms

react.min.js

react.min.js

381 ms

react-dom.min.js

react-dom.min.js

391 ms

escape-html.min.js

escape-html.min.js

396 ms

element.min.js

element.min.js

397 ms

main.js

main.js

615 ms

mediaelement-and-player.min.js

mediaelement-and-player.min.js

533 ms

mediaelement-migrate.min.js

mediaelement-migrate.min.js

475 ms

wp-mediaelement.min.js

wp-mediaelement.min.js

475 ms

jquery.validate.min.js

jquery.validate.min.js

477 ms

mailcheck.min.js

mailcheck.min.js

478 ms

punycode.min.js

punycode.min.js

550 ms

utils.min.js

utils.min.js

551 ms

wpforms.min.js

wpforms.min.js

554 ms

JAZZ-WEB-LOGO-1-1.png

JAZZ-WEB-LOGO-1-1.png

221 ms

submit-spin.svg

submit-spin.svg

274 ms

Accessibility Review

mostlyjazz.co.uk accessibility score

92

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-hidden="true"] elements contain focusable descendents

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

mostlyjazz.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

SEO Factors

mostlyjazz.co.uk 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

    EN

  • Encoding

    UTF-8

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

mostlyjazz.co.uk

Open Graph description is not detected on the main page of Mostly Jazz. 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: