Report Summary

  • 46

    Performance

    Renders faster than
    65% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

zumba-dance.ch

Zumba® Fitness

Page Load Speed

3.4 sec in total

First Response

516 ms

Resources Loaded

2.5 sec

Page Rendered

331 ms

zumba-dance.ch screenshot

About Website

Visit zumba-dance.ch now to see the best up-to-date Zumba Dance content and also check out these interesting facts you probably never knew about zumba-dance.ch

Zumba® Fitness bei Semih und Team Herzlich Willkommen bei der Tanzschule MuSt-Dance Aarau. Die Tanzschule mit den mitreissendsten Zumba® fitness...

Visit zumba-dance.ch

Key Findings

We analyzed Zumba-dance.ch page load time and found that the first response time was 516 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster. This domain responded with an error, which can significantly jeopardize Zumba-dance.ch rating and web reputation

Performance Metrics

zumba-dance.ch performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

71/100

25%

SI (Speed Index)

Value6.0 s

47/100

10%

TBT (Total Blocking Time)

Value880 ms

32/100

30%

CLS (Cumulative Layout Shift)

Value0.246

50/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

zumba-dance.ch

516 ms

mootools-core.js

502 ms

core.js

206 ms

caption.js

220 ms

mootools-more.js

672 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 58% of them (26 requests) were addressed to the original Zumba-dance.ch, 22% (10 requests) were made to Static.xx.fbcdn.net and 4% (2 requests) were made to S.ytimg.com. The less responsive or slowest element that took the longest time to load (672 ms) belongs to the original domain Zumba-dance.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 607.1 kB (65%)

Content Size

930.6 kB

After Optimization

323.5 kB

In fact, the total size of Zumba-dance.ch main page is 930.6 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. 30% of websites need less resources to load. Javascripts take 545.8 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 6.2 kB

  • Original 9.4 kB
  • After minification 8.6 kB
  • After compression 3.1 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 6.2 kB or 67% of the original size.

Image Optimization

-8%

Potential reduce by 9.0 kB

  • Original 113.6 kB
  • After minification 104.6 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. Zumba Dance images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 376.2 kB

  • Original 545.8 kB
  • After minification 540.5 kB
  • After compression 169.7 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 376.2 kB or 69% of the original size.

CSS Optimization

-82%

Potential reduce by 215.6 kB

  • Original 261.8 kB
  • After minification 257.1 kB
  • After compression 46.1 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. Zumba-dance.ch needs all CSS files to be minified and compressed as it can save up to 215.6 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (59%)

Requests Now

39

After Optimization

16

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zumba Dance. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

zumba-dance.ch accessibility score

93

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

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

zumba-dance.ch 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zumba-dance.ch SEO score

100

Search Engine Optimization Advices

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zumba-dance.ch 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 Zumba-dance.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

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