Access allblues.ch. AllBlues Konzert AG – Jazz, Funk & Soul, Worldmusic, Singer-Songwriters sowie Rock-Legenden.

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

68/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value4.5 s

72/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.252

49/100

15%

TTI (Time to Interactive)

Value5.6 s

69/100

10%

allblues.ch

1468 ms

stylesheet.css

195 ms

jquery.bxslider.css

196 ms

jquery.colorbox.css

196 ms

bootstrap.css

408 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 81% of them (57 requests) were addressed to the original Allblues.ch, 4% (3 requests) were made to Platform.twitter.com and 3% (2 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Allblues.ch.

Content Size

1.8 MB

After Optimization

902.2 kB

In fact, the total size of Allblues.ch main page is 1.8 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. 45% of websites need less resources to load. Javascripts take 899.6 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 141.3 kB

Original 166.8 kB
After minification 137.0 kB
After compression 25.5 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 29.8 kB, which is 18% 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 141.3 kB or 85% of the original size.

Image Optimization

-9%

Potential reduce by 53.7 kB

Original 619.2 kB
After minification 565.6 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. All Blues images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 608.1 kB

Original 899.6 kB
After minification 881.4 kB
After compression 291.6 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 608.1 kB or 68% of the original size.

CSS Optimization

-86%

Potential reduce by 121.2 kB

Original 140.6 kB
After minification 110.1 kB
After compression 19.4 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. Allblues.ch needs all CSS files to be minified and compressed as it can save up to 121.2 kB or 86% of the original size.

Requests Now

After Optimization

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of All Blues. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

DE
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Allblues.ch can be misinterpreted by Google and other search engines. Our service has detected that German 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 Allblues.ch 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

allblues.ch

Open Graph description is not detected on the main page of All Blues. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

AllBlues Konzert AG – Jazz, Funk & Soul, Worldmusic, Singer-Songwriters sowie Rock-Legenden.

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

allblues.ch

stylesheet.css

jquery.bxslider.css

jquery.colorbox.css

bootstrap.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

allblues.ch

stylesheet.css

jquery.bxslider.css

jquery.colorbox.css

bootstrap.css

jquery.min.js

bootstrap.min.js

jwplayer.js

jquery.bxslider.min.js

jquery-ui.min.js

jquery.colorbox-min.js

tinynav.js

jquery.validate.js

jquery.metadata.js

messages_de.js

site.js

addthis_widget.js

ga.js

body-bg.gif

allblues-logo.png

allblues-logo-inverted.png

bg-search.gif

logo_jazznojazz.JPG

facebook.jpg

twitter.jpg

hl.nl.ana%20seu.ZH2.jpg

hl.nl.fank.jpg

hl.keita.jpg

hl.Veloso-Gil.jpg

HL.Stacey%20Kent.jpg

hl.Ambrosetti.jpg

hl.Nik.jpg

hl.candy.jpg

buttonTicket.gif

buttonAusverkauft.gif

buttonInfo.gif

buttonLetzteTickets.gif

buttonNeu.gif

top.jpg

sp1.jpg

vulcain_jazz_classics.jpg

vulcain_logo.jpg

sp7.jpg