7.1 sec in total
355 ms
6 sec
782 ms
Click here to check amazing Penguin Readers content. Otherwise, check out these important facts you probably never knew about penguinreaders.cz
Pearson English Readers (dříve Penguin Readers) jsou anglické knížky napsané jednoduchou angličtinou. Tyto knihy se, díky tomu, že je použita jednoduchá angličtina, nazývají zjednodušená četba.
Visit penguinreaders.czWe analyzed Penguinreaders.cz page load time and found that the first response time was 355 ms and then it took 6.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
penguinreaders.cz performance score
name
value
score
weighting
Value4.6 s
14/100
10%
Value9.5 s
0/100
25%
Value7.4 s
28/100
10%
Value6,680 ms
0/100
30%
Value0.01
100/100
15%
Value16.1 s
6/100
10%
355 ms
778 ms
343 ms
240 ms
243 ms
Our browser made a total of 96 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Penguinreaders.cz, 76% (73 requests) were made to Ajshop.cz and 3% (3 requests) were made to Smartsupp-widget-161959.c.cdn77.org. The less responsive or slowest element that took the longest time to load (2.9 sec) relates to the external source Ajshop.cz.
Page size can be reduced by 672.1 kB (33%)
2.0 MB
1.4 MB
In fact, the total size of Penguinreaders.cz main page is 2.0 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. 35% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 44.3 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 9.9 kB, which is 18% 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 44.3 kB or 80% of the original size.
Potential reduce by 33.7 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. Penguin Readers images are well optimized though.
Potential reduce by 504.9 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 504.9 kB or 70% of the original size.
Potential reduce by 89.1 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. Penguinreaders.cz needs all CSS files to be minified and compressed as it can save up to 89.1 kB or 79% of the original size.
Number of requests can be reduced by 37 (40%)
92
55
The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Penguin Readers. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
penguinreaders.cz
355 ms
www.ajshop.cz
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penguinreaders.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.
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
Form elements do not have associated labels
Links do not have a discernible name
penguinreaders.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
penguinreaders.cz SEO score
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
WINDOWS-1250
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Penguinreaders.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 Penguinreaders.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.
penguinreaders.cz
Open Graph description is not detected on the main page of Penguin Readers. 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: