52 sec in total
693 ms
36.6 sec
14.7 sec
Welcome to helion.pl homepage info - get ready to check Helion best content for Poland right away, or after learning these important things about helion.pl
W księgarni można zapoznać się z ofertą Wydawnictwa Helion (opisy, fragmenty książek, opinie czytelników, spisy treści, recenzje). Można także dokonać zakupu wybranych książek (codziennie inna książka...
Visit helion.plWe analyzed Helion.pl page load time and found that the first response time was 693 ms and then it took 51.3 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
helion.pl performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value14.6 s
0/100
25%
Value14.7 s
1/100
10%
Value5,220 ms
0/100
30%
Value0.379
28/100
15%
Value18.1 s
3/100
10%
693 ms
1268 ms
1438 ms
1093 ms
591 ms
Our browser made a total of 54 requests to load all elements on the main page. We found that 7% of them (4 requests) were addressed to the original Helion.pl, 70% (38 requests) were made to Static01.helion.com.pl and 7% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (17 sec) relates to the external source Static01.helion.com.pl.
Page size can be reduced by 829.0 kB (16%)
5.2 MB
4.3 MB
In fact, the total size of Helion.pl main page is 5.2 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 4.1 MB which makes up the majority of the site volume.
Potential reduce by 317.9 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 317.9 kB or 84% of the original size.
Potential reduce by 23.3 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. Helion images are well optimized though.
Potential reduce by 158.9 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 158.9 kB or 49% of the original size.
Potential reduce by 329.0 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. Helion.pl needs all CSS files to be minified and compressed as it can save up to 329.0 kB or 85% of the original size.
Number of requests can be reduced by 5 (11%)
46
41
The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Helion. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.
helion.pl
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helion.pl 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 input fields do not have accessible names
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
[id] attributes on active, focusable elements are not unique
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
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
helion.pl 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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
helion.pl SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
PL
PL
ISO-8859-2
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Helion.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish is used on the page, and it matches the claimed language. Our system also found out that Helion.pl main page’s claimed encoding is iso-8859-2. 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.
helion.pl
Open Graph description is not detected on the main page of Helion. 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: