3.4 sec in total
603 ms
2.6 sec
224 ms
Visit df.biom.cz now to see the best up-to-date Df Biom content for Czech Republic and also check out these interesting facts you probably never knew about df.biom.cz
Odborný internetový portál zabývající se tématy: biomasa, biopaliva, bioplyn, pelety, kompostování...
Visit df.biom.czWe analyzed Df.biom.cz page load time and found that the first response time was 603 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.
df.biom.cz performance score
name
value
score
weighting
Value3.6 s
32/100
10%
Value6.5 s
9/100
25%
Value5.0 s
63/100
10%
Value170 ms
93/100
30%
Value0
100/100
15%
Value6.6 s
57/100
10%
603 ms
317 ms
644 ms
15 ms
268 ms
Our browser made a total of 78 requests to load all elements on the main page. We found that 38% of them (30 requests) were addressed to the original Df.biom.cz, 29% (23 requests) were made to Biom.cz and 13% (10 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Biom.cz.
Page size can be reduced by 391.8 kB (41%)
944.1 kB
552.3 kB
In fact, the total size of Df.biom.cz main page is 944.1 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. 50% of websites need less resources to load. Images take 605.3 kB which makes up the majority of the site volume.
Potential reduce by 41.9 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 41.9 kB or 71% of the original size.
Potential reduce by 125.8 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, Df Biom needs image optimization as it can save up to 125.8 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 201.3 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 201.3 kB or 80% of the original size.
Potential reduce by 22.8 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. Df.biom.cz needs all CSS files to be minified and compressed as it can save up to 22.8 kB or 82% of the original size.
Number of requests can be reduced by 22 (29%)
76
54
The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Df Biom. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
df.biom.cz
603 ms
biom.css
317 ms
aajslib.php3
644 ms
jsapi
15 ms
jsview.php3
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jsview.php3
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urchin.js
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logo-bim-cz.png
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pix.gif
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likebox.php
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5 ms
print.css
108 ms
df.biom.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
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
Image elements do not have [alt] attributes
df.biom.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
df.biom.cz SEO score
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
Tap targets are not sized appropriately
N/A
CS
WINDOWS-1250
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Df.biom.cz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Czech. Our system also found out that Df.biom.cz main page’s claimed encoding is windows-1250. 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.
df.biom.cz
Open Graph description is not detected on the main page of Df Biom. 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: