6 sec in total
479 ms
5.1 sec
348 ms
Visit web.natur.cuni.cz now to see the best up-to-date Web Natur Cuni content for Czech Republic and also check out these interesting facts you probably never knew about web.natur.cuni.cz
Faculty.
Visit web.natur.cuni.czWe analyzed Web.natur.cuni.cz page load time and found that the first response time was 479 ms and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
web.natur.cuni.cz performance score
name
value
score
weighting
Value5.8 s
4/100
10%
Value9.4 s
1/100
25%
Value7.9 s
23/100
10%
Value230 ms
86/100
30%
Value0.085
93/100
15%
Value6.6 s
57/100
10%
479 ms
836 ms
245 ms
238 ms
353 ms
Our browser made a total of 44 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Web.natur.cuni.cz, 77% (34 requests) were made to Natur.cuni.cz and 11% (5 requests) were made to Tarantula.ruk.cuni.cz. The less responsive or slowest element that took the longest time to load (2.5 sec) relates to the external source Tarantula.ruk.cuni.cz.
Page size can be reduced by 110.6 kB (20%)
547.3 kB
436.7 kB
In fact, the total size of Web.natur.cuni.cz main page is 547.3 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. 35% of websites need less resources to load. Images take 404.2 kB which makes up the majority of the site volume.
Potential reduce by 66.5 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 12.1 kB, which is 15% 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 66.5 kB or 83% of the original size.
Potential reduce by 12.1 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. Web Natur Cuni images are well optimized though.
Potential reduce by 30.7 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 30.7 kB or 50% of the original size.
Potential reduce by 1.3 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. Web.natur.cuni.cz needs all CSS files to be minified and compressed as it can save up to 1.3 kB or 75% of the original size.
Number of requests can be reduced by 11 (28%)
39
28
The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Web Natur Cuni. 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 8 to 1 for CSS and as a result speed up the page load time.
web.natur.cuni.cz
479 ms
www.natur.cuni.cz
836 ms
eng
245 ms
reset-cachekey-5b7620c39f7fcd7476f712f9cbc8c674.css
238 ms
base-cachekey-7da4a0169f5cb088bed1115b7632d451.css
353 ms
resourcetinymce.stylesheetstinymce-cachekey-c83713f44cce61b49a418a6f023eddd9.css
361 ms
jquery.fancybox-cachekey-4cfac654b06dd32d7c9f9b77e6fe5038.css
360 ms
ploneCustom-cachekey-d6a2c51eab3bc9f5f5e9b8a24929d594.css
362 ms
themeprfuk4.themecssmain-cachekey-ab9cb151a7909d98defa3c642ec14ae2.css
481 ms
resourceplone.app.jquery-cachekey-e2b63e43a57f727ff5cc69bca954acf6.js
601 ms
themeprfuk4.themejsmwheelIntent-cachekey-040a691949d691efc81403a6bd88170a.js
467 ms
inline_validation-cachekey-eebd641ab026ba80f106c24b13bc6946.js
475 ms
slick.min.js
477 ms
slick.css
476 ms
css
60 ms
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logo-en.png
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image_thumb
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banner-ckis-en.jpg
428 ms
prfuk-banner-faculty-eshop.png
536 ms
u-WUoqrET9fUeobQW7jkRaCWcynf_cDxXwCLxiixG1c.ttf
166 ms
icomoon.woff
856 ms
analytics.js
160 ms
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web.natur.cuni.cz accessibility score
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
Buttons do not have an accessible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
web.natur.cuni.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
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
web.natur.cuni.cz SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Tap targets are not sized appropriately
EN
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Web.natur.cuni.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Czech language. Our system also found out that Web.natur.cuni.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.
web.natur.cuni.cz
Open Graph description is not detected on the main page of Web Natur Cuni. 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: