Access vocal-collegium-rostock.de. Chor, Konzert, Gesang

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

25/100

25%

SI (Speed Index)

Value3.7 s

85/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value3.9 s

88/100

10%

vocal-collegium-rostock.de

441 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Vocal-collegium-rostock.de and no external sources were called. The less responsive or slowest element that took the longest time to load (441 ms) belongs to the original domain Vocal-collegium-rostock.de.

Content Size

599.0 kB

After Optimization

337.3 kB

In fact, the total size of Vocal-collegium-rostock.de main page is 599.0 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Javascripts take 344.4 kB which makes up the majority of the site volume.

HTML Optimization

-51%

Potential reduce by 599 B

Original 1.2 kB
After minification 1.2 kB
After compression 587 B

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 599 B or 51% of the original size.

Image Optimization

-4%

Potential reduce by 9.4 kB

Original 231.8 kB
After minification 222.4 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. Vocal Collegium Rostock images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 234.5 kB

Original 344.4 kB
After minification 344.4 kB
After compression 109.9 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 234.5 kB or 68% of the original size.

CSS Optimization

-80%

Potential reduce by 17.2 kB

Original 21.5 kB
After minification 20.5 kB
After compression 4.4 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. Vocal-collegium-rostock.de needs all CSS files to be minified and compressed as it can save up to 17.2 kB or 80% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Issues

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 interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

DE
Language Claimed

DE
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vocal-collegium-rostock.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Vocal-collegium-rostock.de 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

Open Graph description is not detected on the main page of Vocal Collegium Rostock. 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: