Tools & Wizards About Us
zoovienna.at screenshot

Report Summary

  • 87

    Performance

    Renders faster than
    89% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

zoovienna.at

Startseite – Tiergarten Schönbrunn

Page Load Speed

2.8 sec in total

First Response

370 ms

Resources Loaded

2.2 sec

Page Rendered

221 ms

zoovienna.at screenshot

About Website

Welcome to zoovienna.at homepage info - get ready to check Zoovienna best content for Austria right away, or after learning these important things about zoovienna.at

Der älteste Zoo der Welt liegt mitten in der kaiserlichen Sommerresidenz Schönbrunn in Wien. In einer einzigartigen Verbindung von Kultur und Natur entdeckt man den vielleicht schönsten Zoo der Welt. ...

Visit zoovienna.at

Key Findings

We analyzed Zoovienna.at page load time and found that the first response time was 370 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

zoovienna.at performance score

87

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

68/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

72/100

25%

SI (Speed Index)

Value4.3 s

76/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.023

100/100

15%

TTI (Time to Interactive)

Value2.7 s

97/100

10%

Network Requests Diagram

zoovienna.at

370 ms

www.zoovienna.at

1134 ms

25f23576c626.css

373 ms

Tripadvisor_Travellers_choice_award.png

361 ms

4662b301d844.js

375 ms

Our browser made a total of 18 requests to load all elements on the main page. We found that all of those requests were addressed to Zoovienna.at and no external sources were called. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Zoovienna.at.

Page Optimization Overview & Recommendations

Page size can be reduced by 107.2 kB (28%)

Content Size

386.9 kB

After Optimization

279.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zoovienna.at main page is 386.9 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. 20% of websites need less resources to load. Images take 119.2 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 84.9 kB

  • Original 100.6 kB
  • After minification 100.1 kB
  • After compression 15.7 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 84.9 kB or 84% of the original size.

Image Optimization

-19%

Potential reduce by 22.2 kB

  • Original 119.2 kB
  • After minification 97.0 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. Obviously, Zoovienna needs image optimization as it can save up to 22.2 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 12 B

  • Original 49.1 kB
  • After minification 49.1 kB
  • After compression 49.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 58 B

  • Original 117.9 kB
  • After minification 117.9 kB
  • After compression 117.9 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. Zoovienna.at has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

16

After Optimization

16

  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zoovienna. According to our analytics all requests are already optimized.

Network Requests Diagram

zoovienna.at

zoovienna.at

370 ms

www.zoovienna.at

www.zoovienna.at

1134 ms

25f23576c626.css

25f23576c626.css

373 ms

Tripadvisor_Travellers_choice_award.png

Tripadvisor_Travellers_choice_award.png

361 ms

4662b301d844.js

4662b301d844.js

375 ms

c284d9710850.js

c284d9710850.js

273 ms

icon-best-zoo.svg

icon-best-zoo.svg

105 ms

icon_tickets.png

icon_tickets.png

103 ms

icon_map.png

icon_map.png

104 ms

icon_karotte.png

icon_karotte.png

103 ms

icon-heart.png

icon-heart.png

181 ms

icon-experience.png

icon-experience.png

182 ms

icon-faq.png

icon-faq.png

183 ms

btn-buy_ticket.png

btn-buy_ticket.png

185 ms

information.svg

information.svg

271 ms

icon-instagram.svg

icon-instagram.svg

272 ms

Lehrbetrieb_Qualit%C3%A4tssiegel_2x.png

Lehrbetrieb_Qualit%C3%A4tssiegel_2x.png

362 ms

logo-iucn.svg

logo-iucn.svg

272 ms

Accessibility Review

zoovienna.at accessibility score

66

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

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

Form elements do not have associated labels

Tables and lists

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

Impact

Issue

High

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

Best Practices

zoovienna.at best practices score

83

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

SEO Factors

zoovienna.at SEO score

81

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

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zoovienna.at 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 Zoovienna.at main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

zoovienna.at

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