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cbso.co.uk screenshot

Report Summary

  • 35

    Performance

    Renders faster than
    54% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

cbso.co.uk

City of Birmingham Symphony Orchestra | CBSO | City of Birmingham Symphony Orchestra

Page Load Speed

5.3 sec in total

First Response

116 ms

Resources Loaded

3.9 sec

Page Rendered

1.3 sec

cbso.co.uk screenshot

About Website

Click here to check amazing CBSO content for Ireland. Otherwise, check out these important facts you probably never knew about cbso.co.uk

The CBSO is proud to be Birmingham's Orchestra. 90 musicians making musical experiences that matter to the people of Birmingham and beyond.

Visit cbso.co.uk

Key Findings

We analyzed Cbso.co.uk page load time and found that the first response time was 116 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

cbso.co.uk performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

27/100

25%

SI (Speed Index)

Value3.5 s

89/100

10%

TBT (Total Blocking Time)

Value1,900 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.782

5/100

15%

TTI (Time to Interactive)

Value5.8 s

67/100

10%

Network Requests Diagram

cbso.co.uk

116 ms

cbso.co.uk

382 ms

240327_CBSO_Jason_Lewis_047-RGB-CUT.png

862 ms

2023.08-CBSO-Tram-at-Broad-Street-cr.-Hannah-Fathers-3.jpg

1292 ms

f_KK_00187_2-1024x1024-UP.jpg

1343 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 28% of them (7 requests) were addressed to the original Cbso.co.uk, 68% (17 requests) were made to Optimise2.assets-servd.host and 4% (1 request) were made to Tickets.cbso.co.uk. The less responsive or slowest element that took the longest time to load (3.4 sec) relates to the external source Optimise2.assets-servd.host.

Page Optimization Overview & Recommendations

Page size can be reduced by 105.9 kB (13%)

Content Size

801.0 kB

After Optimization

695.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cbso.co.uk main page is 801.0 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. Images take 638.3 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 94.4 kB

  • Original 129.4 kB
  • After minification 128.1 kB
  • After compression 35.1 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 94.4 kB or 73% of the original size.

Image Optimization

-0%

Potential reduce by 3.1 kB

  • Original 638.3 kB
  • After minification 635.2 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. CBSO images are well optimized though.

JavaScript Optimization

-30%

Potential reduce by 572 B

  • Original 1.9 kB
  • After minification 1.9 kB
  • After compression 1.4 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 572 B or 30% of the original size.

CSS Optimization

-25%

Potential reduce by 7.9 kB

  • Original 31.2 kB
  • After minification 31.2 kB
  • After compression 23.4 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. Cbso.co.uk needs all CSS files to be minified and compressed as it can save up to 7.9 kB or 25% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

20

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CBSO. According to our analytics all requests are already optimized.

Network Requests Diagram

cbso.co.uk

cbso.co.uk

116 ms

cbso.co.uk

cbso.co.uk

382 ms

240327_CBSO_Jason_Lewis_047-RGB-CUT.png

240327_CBSO_Jason_Lewis_047-RGB-CUT.png

862 ms

2023.08-CBSO-Tram-at-Broad-Street-cr.-Hannah-Fathers-3.jpg

2023.08-CBSO-Tram-at-Broad-Street-cr.-Hannah-Fathers-3.jpg

1292 ms

f_KK_00187_2-1024x1024-UP.jpg

f_KK_00187_2-1024x1024-UP.jpg

1343 ms

2023.06.14-CBSO-Kazuki-Yamada-Ian-Bostridge-Elspeth-Dutch-cr.-Andrew-Fox-13.jpg

2023.06.14-CBSO-Kazuki-Yamada-Ian-Bostridge-Elspeth-Dutch-cr.-Andrew-Fox-13.jpg

1437 ms

25.09.24-2023.01-CBSO_Fabien-Gabel_Baiba-Skride-cr.-Hannah-Fathers-1036168.jpg

25.09.24-2023.01-CBSO_Fabien-Gabel_Baiba-Skride-cr.-Hannah-Fathers-1036168.jpg

1351 ms

achter_banner-sabel.png

achter_banner-sabel.png

1457 ms

10.10.24-Sondergard_credit-Andy-Buchanan.jpg

10.10.24-Sondergard_credit-Andy-Buchanan.jpg

1699 ms

CBSO_22-03-00.Audience_Foyer2.crAndrewFox.jpg

CBSO_22-03-00.Audience_Foyer2.crAndrewFox.jpg

1728 ms

2022.03-CBSO-Myths-and-Legends-School-Project-cr.-River-Rea-70.jpg

2022.03-CBSO-Myths-and-Legends-School-Project-cr.-River-Rea-70.jpg

1860 ms

CBSO_23-01-00.Orchestra_Filming2.crHannahFathers.jpg

CBSO_23-01-00.Orchestra_Filming2.crHannahFathers.jpg

1905 ms

CBSO_22-05-04.SymphonyHall_KazukiYamada.crBenjaminEalovega.jpg

CBSO_22-05-04.SymphonyHall_KazukiYamada.crBenjaminEalovega.jpg

2418 ms

CBSO_23-02-00.Audience_Applause.crAndrewFox.jpg

CBSO_23-02-00.Audience_Applause.crAndrewFox.jpg

1955 ms

CBSO_22-11-18.NewStreet.crAndrewFox.jpg

CBSO_22-11-18.NewStreet.crAndrewFox.jpg

2519 ms

CBSO_22-03-00.Orchestra_CharlottePoliti.crAndrewFox.jpg

CBSO_22-03-00.Orchestra_CharlottePoliti.crAndrewFox.jpg

2291 ms

Highfields-Artwork.JPG

Highfields-Artwork.JPG

3436 ms

2023.06.14-CBSO-Kazuki-Yamada-Ian-Bostridge-Elspeth-Dutch-cr.-Andrew-Fox-3.jpg

2023.06.14-CBSO-Kazuki-Yamada-Ian-Bostridge-Elspeth-Dutch-cr.-Andrew-Fox-3.jpg

2625 ms

CBSO_22-09-20.KazukiYamada_NicolaBenedetti_Violin1.crAndrewFox.jpg

CBSO_22-09-20.KazukiYamada_NicolaBenedetti_Violin1.crAndrewFox.jpg

2360 ms

app-027c0f1e43.js

app-027c0f1e43.js

38 ms

integrate.js

integrate.js

145 ms

main-383e5a0ee1.min.css

main-383e5a0ee1.min.css

29 ms

RMNeue-Regular.woff

RMNeue-Regular.woff

127 ms

RMNeue-Bold.woff

RMNeue-Bold.woff

48 ms

RecentGroteskWebBold.woff

RecentGroteskWebBold.woff

136 ms

Accessibility Review

cbso.co.uk accessibility score

94

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

High

Some elements have a [tabindex] value greater than 0

Best Practices

cbso.co.uk best practices score

83

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

cbso.co.uk SEO score

92

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 Cbso.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 Cbso.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

cbso.co.uk

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