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Welcome to ncbi.cz homepage info - get ready to check Ncbi best content right away, or after learning these important things about ncbi.cz
Visit ncbi.czWe analyzed Ncbi.cz page load time and found that the first response time was 1.4 sec and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster. This domain responded with an error, which can significantly jeopardize Ncbi.cz rating and web reputation
ncbi.cz performance score
name
value
score
weighting
Value6.9 s
1/100
10%
Value8.5 s
1/100
25%
Value12.4 s
3/100
10%
Value300 ms
79/100
30%
Value0.114
86/100
15%
Value9.9 s
27/100
10%
1389 ms
350 ms
243 ms
246 ms
846 ms
Our browser made a total of 60 requests to load all elements on the main page. We found that 70% of them (42 requests) were addressed to the original Ncbi.cz, 12% (7 requests) were made to Translate.googleapis.com and 7% (4 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Ncbi.cz.
Page size can be reduced by 424.7 kB (52%)
821.9 kB
397.1 kB
In fact, the total size of Ncbi.cz main page is 821.9 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. 25% of websites need less resources to load. Javascripts take 527.9 kB which makes up the majority of the site volume.
Potential reduce by 36.5 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. 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 36.5 kB or 75% of the original size.
Potential reduce by 26.9 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, Ncbi needs image optimization as it can save up to 26.9 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 322.3 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 322.3 kB or 61% of the original size.
Potential reduce by 39.2 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. Ncbi.cz needs all CSS files to be minified and compressed as it can save up to 39.2 kB or 74% of the original size.
Number of requests can be reduced by 37 (67%)
55
18
The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ncbi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.
www.ncbi.cz
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ncbi.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
Links do not have a discernible name
ncbi.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
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
ncbi.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 Ncbi.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 Ncbi.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.
ncbi.cz
Open Graph description is not detected on the main page of Ncbi. 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: