3.9 sec in total
421 ms
3.1 sec
398 ms
Welcome to nejlevnejsi-knihy.cz homepage info - get ready to check Nejlevnejsi Knihy best content for Czech Republic right away, or after learning these important things about nejlevnejsi-knihy.cz
Visit nejlevnejsi-knihy.czWe analyzed Nejlevnejsi-knihy.cz page load time and found that the first response time was 421 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
nejlevnejsi-knihy.cz performance score
name
value
score
weighting
Value3.9 s
25/100
10%
Value15.5 s
0/100
25%
Value8.7 s
16/100
10%
Value480 ms
60/100
30%
Value0.033
100/100
15%
Value12.2 s
16/100
10%
421 ms
542 ms
307 ms
27 ms
209 ms
Our browser made a total of 111 requests to load all elements on the main page. We found that 92% of them (102 requests) were addressed to the original Nejlevnejsi-knihy.cz, 3% (3 requests) were made to Google-analytics.com and 2% (2 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (899 ms) belongs to the original domain Nejlevnejsi-knihy.cz.
Page size can be reduced by 222.9 kB (16%)
1.4 MB
1.2 MB
In fact, the total size of Nejlevnejsi-knihy.cz main page is 1.4 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. 60% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 39.4 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 7.3 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 39.4 kB or 81% of the original size.
Potential reduce by 135.4 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, Nejlevnejsi Knihy needs image optimization as it can save up to 135.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 48.2 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 48.2 kB or 65% of the original size.
Number of requests can be reduced by 30 (28%)
108
78
The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nejlevnejsi Knihy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.
nejlevnejsi-knihy.cz
421 ms
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nejlevnejsi-knihy.cz accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA IDs are not unique
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
nejlevnejsi-knihy.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
nejlevnejsi-knihy.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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nejlevnejsi-knihy.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 Nejlevnejsi-knihy.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.
nejlevnejsi-knihy.cz
Open Graph description is not detected on the main page of Nejlevnejsi Knihy. 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: