Tools & Wizards About Us
vdoper.de screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

vdoper.de

Vereinigung deutscher Opern- und Tanzensembles e.V. |

Page Load Speed

8.2 sec in total

First Response

1.2 sec

Resources Loaded

6.6 sec

Page Rendered

315 ms

vdoper.de screenshot

About Website

Welcome to vdoper.de homepage info - get ready to check Vdoper best content right away, or after learning these important things about vdoper.de

Die Vereinigung deutscher Opernchöre und Bühnentänzer ist Berufsvereinigung und Gewerkschaft der darstellenden künstlerischen Kollektive an den deutschen Bühnen.

Visit vdoper.de

Key Findings

We analyzed Vdoper.de page load time and found that the first response time was 1.2 sec and then it took 6.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

vdoper.de performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

61/100

10%

LCP (Largest Contentful Paint)

Value11.6 s

0/100

25%

SI (Speed Index)

Value10.7 s

7/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.486

17/100

15%

TTI (Time to Interactive)

Value20.7 s

2/100

10%

Network Requests Diagram

www.vdoper.de

1246 ms

css_lQaZfjVpwP_oGNqdtWCSpJT1EMqXdMiU84ekLLxQnc4.css

105 ms

css_Mii9Ny6aitpgq4b_clJbgfhauw3OVqKNoyS8h37-JF8.css

208 ms

css_atkFGFlvG6sSQcIj6Q73rpgsXhtr58AwITc2aQjVotk.css

210 ms

css_UiJw6xI6g5zN84fX92EcVtpcr7WbOs2Oz-KwPUQRNkI.css

210 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that all of those requests were addressed to Vdoper.de and no external sources were called. The less responsive or slowest element that took the longest time to load (4.2 sec) belongs to the original domain Vdoper.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 589.5 kB (7%)

Content Size

9.0 MB

After Optimization

8.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vdoper.de main page is 9.0 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. 25% of websites need less resources to load. Images take 8.8 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 43.5 kB

  • Original 51.5 kB
  • After minification 49.5 kB
  • After compression 8.0 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 43.5 kB or 84% of the original size.

Image Optimization

-4%

Potential reduce by 374.2 kB

  • Original 8.8 MB
  • After minification 8.4 MB

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. Vdoper images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 126.6 kB

  • Original 171.0 kB
  • After minification 138.2 kB
  • After compression 44.4 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 126.6 kB or 74% of the original size.

CSS Optimization

-75%

Potential reduce by 45.2 kB

  • Original 60.5 kB
  • After minification 59.3 kB
  • After compression 15.3 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. Vdoper.de needs all CSS files to be minified and compressed as it can save up to 45.2 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (16%)

Requests Now

44

After Optimization

37

  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vdoper. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.vdoper.de

www.vdoper.de

1246 ms

css_lQaZfjVpwP_oGNqdtWCSpJT1EMqXdMiU84ekLLxQnc4.css

css_lQaZfjVpwP_oGNqdtWCSpJT1EMqXdMiU84ekLLxQnc4.css

105 ms

css_Mii9Ny6aitpgq4b_clJbgfhauw3OVqKNoyS8h37-JF8.css

css_Mii9Ny6aitpgq4b_clJbgfhauw3OVqKNoyS8h37-JF8.css

208 ms

css_atkFGFlvG6sSQcIj6Q73rpgsXhtr58AwITc2aQjVotk.css

css_atkFGFlvG6sSQcIj6Q73rpgsXhtr58AwITc2aQjVotk.css

210 ms

css_UiJw6xI6g5zN84fX92EcVtpcr7WbOs2Oz-KwPUQRNkI.css

css_UiJw6xI6g5zN84fX92EcVtpcr7WbOs2Oz-KwPUQRNkI.css

210 ms

js_UWQINlriydSoeSiGQxToOUdv493zEa7dpsXC1OtYlZU.js

js_UWQINlriydSoeSiGQxToOUdv493zEa7dpsXC1OtYlZU.js

313 ms

js_ppKCjbfaGLRrKU3mOCSd_cs77ZOc6ercIqQ-gpCOnDQ.js

js_ppKCjbfaGLRrKU3mOCSd_cs77ZOc6ercIqQ-gpCOnDQ.js

214 ms

js_Ok2I9tXfYNWMJvfI_gbg9nap2z-wQPKksnWWvUOkQwU.js

js_Ok2I9tXfYNWMJvfI_gbg9nap2z-wQPKksnWWvUOkQwU.js

753 ms

js_3O-0Bc_Emcsp1pvZDciF1U1kYR-_SvWJxXGS6DLbmKc.js

js_3O-0Bc_Emcsp1pvZDciF1U1kYR-_SvWJxXGS6DLbmKc.js

309 ms

js_6TAnF117heNLUe_NSA6QrMWPUlMbDthN85wxrI4UFUM.js

js_6TAnF117heNLUe_NSA6QrMWPUlMbDthN85wxrI4UFUM.js

309 ms

logo.jpg

logo.jpg

105 ms

VdO-Foto1@2x.jpg

VdO-Foto1@2x.jpg

1240 ms

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1496 ms

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1392 ms

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1168 ms

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1277 ms

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1256 ms

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2112 ms

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1866 ms

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2958 ms

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1381 ms

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1979 ms

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2514 ms

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1993 ms

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2592 ms

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2301 ms

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2311 ms

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2498 ms

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3277 ms

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3536 ms

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3249 ms

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2890 ms

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petrenko_bachler_c_joachim_baldauf.jpg

2822 ms

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3144 ms

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luebeck_lady-macbeth-von-mzensk_22_jochen_quast.jpg

3438 ms

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3335 ms

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3452 ms

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3650 ms

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3637 ms

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4221 ms

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3827 ms

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3674 ms

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3886 ms

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3856 ms

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slider_pfeile_sprite.fw.png

3757 ms

Accessibility Review

vdoper.de accessibility score

88

Accessibility Issues

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

vdoper.de best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

vdoper.de SEO score

84

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

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

vdoper.de

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