Report Summary

  • 48

    Performance

    Renders faster than
    67% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

zoo-berlin.de

Zoo Berlin: Top-Ausflugsziel in Berlin mit Kindern

Page Load Speed

4.6 sec in total

First Response

346 ms

Resources Loaded

3.2 sec

Page Rendered

1.1 sec

zoo-berlin.de screenshot

About Website

Welcome to zoo-berlin.de homepage info - get ready to check Zoo Berlin best content for Germany right away, or after learning these important things about zoo-berlin.de

Zoo Berlin, die wildeste Sehenswürdigkeit in Berlin. Erleben Sie einen tierischen Familienausflug mit Panda, Nashorn & Co!

Visit zoo-berlin.de

Key Findings

We analyzed Zoo-berlin.de page load time and found that the first response time was 346 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

zoo-berlin.de performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value9.0 s

1/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value320 ms

77/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

Network Requests Diagram

zoo-berlin.de

346 ms

de

96 ms

de

419 ms

stylesheet_c68056ec3e.css

97 ms

zoo.css

277 ms

Our browser made a total of 113 requests to load all elements on the main page. We found that 87% of them (98 requests) were addressed to the original Zoo-berlin.de, 3% (3 requests) were made to Fast.fonts.net and 3% (3 requests) were made to Nl-services.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Zoo-berlin.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 592.4 kB (15%)

Content Size

3.8 MB

After Optimization

3.2 MB

In fact, the total size of Zoo-berlin.de main page is 3.8 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. 65% of websites need less resources to load. Images take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 60.4 kB

  • Original 75.0 kB
  • After minification 72.0 kB
  • After compression 14.6 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 60.4 kB or 81% of the original size.

Image Optimization

-3%

Potential reduce by 86.9 kB

  • Original 3.2 MB
  • After minification 3.1 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. Zoo Berlin images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 167.5 kB

  • Original 261.6 kB
  • After minification 258.1 kB
  • After compression 94.0 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 167.5 kB or 64% of the original size.

CSS Optimization

-89%

Potential reduce by 277.5 kB

  • Original 312.5 kB
  • After minification 303.8 kB
  • After compression 35.0 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. Zoo-berlin.de needs all CSS files to be minified and compressed as it can save up to 277.5 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (33%)

Requests Now

106

After Optimization

71

The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zoo Berlin. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

zoo-berlin.de accessibility score

83

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.

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

zoo-berlin.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

High

Missing source maps for large first-party JavaScript

SEO Factors

zoo-berlin.de SEO score

79

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

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 Zoo-berlin.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 Zoo-berlin.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 data is detected on the main page of Zoo Berlin. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: