5.2 sec in total
351 ms
4.6 sec
265 ms
Visit alza.cz now to see the best up-to-date Alza content for Czech Republic and also check out these interesting facts you probably never knew about alza.cz
Největší obchod s počítači a elektronikou ✅ Přes 40 prodejen, více než 1 000 Alzaboxů a 15 000 dalších odběrných míst ✅ Elektronika, hračky, domácí pořeby, s...
Visit alza.czWe analyzed Alza.cz page load time and found that the first response time was 351 ms and then it took 4.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
alza.cz performance score
name
value
score
weighting
Value4.3 s
18/100
10%
Value11.1 s
0/100
25%
Value6.0 s
47/100
10%
Value5,470 ms
0/100
30%
Value0.392
26/100
15%
Value17.2 s
4/100
10%
351 ms
501 ms
356 ms
928 ms
911 ms
Our browser made a total of 96 requests to load all elements on the main page. We found that 10% of them (10 requests) were addressed to the original Alza.cz, 67% (64 requests) were made to I.alza.cz and 4% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source I.alza.cz.
Page size can be reduced by 3.0 MB (66%)
4.6 MB
1.6 MB
In fact, the total size of Alza.cz main page is 4.6 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. 45% of websites need less resources to load. CSS take 2.5 MB which makes up the majority of the site volume.
Potential reduce by 177.0 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 177.0 kB or 82% of the original size.
Potential reduce by 92.6 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. Alza images are well optimized though.
Potential reduce by 604.3 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 604.3 kB or 63% of the original size.
Potential reduce by 2.2 MB
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. Alza.cz needs all CSS files to be minified and compressed as it can save up to 2.2 MB or 85% of the original size.
Number of requests can be reduced by 38 (43%)
89
51
The browser has sent 89 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alza. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
alza.cz
351 ms
alza.cz
501 ms
www.alza.cz
356 ms
www.alza.cz
928 ms
global-full1-a81eb63ad99c9932e845191c26f14f95f1ff4487.css
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critical-22d2dccad464505d46c50c3c25e8f4634e8df798.js
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ifAlza.min.js
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lang-CZ-418959028.js
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default-19e693df013c739096a9bce0cf41211d809e94dd.js
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defaultPage-728f0bd70a10d91a12ecf768538830e28db5cad9.js
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alza.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-hidden="true"] elements contain focusable descendents
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
alza.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
alza.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alza.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Alza.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.
alza.cz
Open Graph description is not detected on the main page of Alza. 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: