6.3 sec in total
274 ms
5 sec
985 ms
Click here to check amazing Zoo Ostrava content for Czech Republic. Otherwise, check out these important facts you probably never knew about zoo-ostrava.cz
Ostravská Zoo, to je příroda na dosah. Velká Zoo s mnoha zvířaty a velkou botanickou zahradou.
Visit zoo-ostrava.czWe analyzed Zoo-ostrava.cz page load time and found that the first response time was 274 ms and then it took 6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
zoo-ostrava.cz performance score
name
value
score
weighting
Value4.0 s
24/100
10%
Value13.8 s
0/100
25%
Value5.6 s
53/100
10%
Value950 ms
29/100
30%
Value0
100/100
15%
Value16.8 s
5/100
10%
274 ms
309 ms
26 ms
137 ms
251 ms
Our browser made a total of 167 requests to load all elements on the main page. We found that 74% of them (124 requests) were addressed to the original Zoo-ostrava.cz, 6% (10 requests) were made to Static.xx.fbcdn.net and 4% (6 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Zoo-ostrava.cz.
Page size can be reduced by 516.6 kB (13%)
3.9 MB
3.4 MB
In fact, the total size of Zoo-ostrava.cz main page is 3.9 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. 70% of websites need less resources to load. Images take 3.4 MB which makes up the majority of the site volume.
Potential reduce by 64.0 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. This page needs HTML code to be minified as it can gain 8.9 kB, which is 11% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 64.0 kB or 81% of the original size.
Potential reduce by 172.2 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. Zoo Ostrava images are well optimized though.
Potential reduce by 209.7 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 209.7 kB or 68% of the original size.
Potential reduce by 70.7 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-ostrava.cz needs all CSS files to be minified and compressed as it can save up to 70.7 kB or 85% of the original size.
Number of requests can be reduced by 37 (24%)
156
119
The browser has sent 156 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zoo Ostrava. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
zoo-ostrava.cz
274 ms
www.zoo-ostrava.cz
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zoo-ostrava.cz accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
zoo-ostrava.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
zoo-ostrava.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
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
Document uses legible font sizes
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zoo-ostrava.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Zoo-ostrava.cz 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.
zoo-ostrava.cz
Open Graph description is not detected on the main page of Zoo Ostrava. 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: