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We analyzed Dalekohled-mikroskop.cz page load time and found that the first response time was 318 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
dalekohled-mikroskop.cz performance score
Our browser made a total of 65 requests to load all elements on the main page. We found that 9% of them (6 requests) were addressed to the original Dalekohled-mikroskop.cz, 66% (43 requests) were made to Storage.dalekohled-mikroskop.cz and 22% (14 requests) were made to Static.dalekohled-mikroskop.cz. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Storage.dalekohled-mikroskop.cz.
Page size can be reduced by 228.7 kB (35%)
In fact, the total size of Dalekohled-mikroskop.cz main page is 648.9 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. 30% of websites need less resources to load. Images take 512.0 kB which makes up the majority of the site volume.
Potential reduce by 43.9 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. This page needs HTML code to be minified as it can gain 10.3 kB, which is 20% 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 43.9 kB or 85% of the original size.
Potential reduce by 138.3 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, Dalekohled Mikroskop needs image optimization as it can save up to 138.3 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 37.7 kB
Potential reduce by 8.8 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. Dalekohled-mikroskop.cz needs all CSS files to be minified and compressed as it can save up to 8.8 kB or 81% of the original size.
We found no issues to fix!
dalekohled-mikroskop.cz accessibility score
These are opportunities to improve the legibility of your content.
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.
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
dalekohled-mikroskop.cz best practices score
Trust and Safety
Does not use HTTPS
Ensure CSP is effective against XSS attacks
Serves images with low resolution
dalekohled-mikroskop.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have [alt] attributes
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/).
Document uses legible font sizes
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dalekohled-mikroskop.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 Dalekohled-mikroskop.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.
Open Graph description is not detected on the main page of Dalekohled Mikroskop. 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: