4.2 sec in total
362 ms
3.4 sec
440 ms
Click here to check amazing Zerex content for Czech Republic. Otherwise, check out these important facts you probably never knew about zerex.cz
Zerex- oblíbené doplňky výživy, vitamíny a produkty pro zdraví. Zerex - Zdraví nás sbližuje.
Visit zerex.czWe analyzed Zerex.cz page load time and found that the first response time was 362 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
zerex.cz performance score
name
value
score
weighting
Value3.6 s
31/100
10%
Value22.5 s
0/100
25%
Value8.6 s
17/100
10%
Value3,650 ms
1/100
30%
Value0.784
5/100
15%
Value14.4 s
9/100
10%
362 ms
491 ms
22 ms
38 ms
20 ms
Our browser made a total of 112 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Zerex.cz, 86% (96 requests) were made to Izerex.cz and 4% (4 requests) were made to Cdn.luigisbox.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Izerex.cz.
Page size can be reduced by 561.2 kB (11%)
5.0 MB
4.4 MB
In fact, the total size of Zerex.cz main page is 5.0 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. 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 4.4 MB which makes up the majority of the site volume.
Potential reduce by 321.1 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 74.9 kB, which is 21% 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 321.1 kB or 89% of the original size.
Potential reduce by 236.5 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. Zerex images are well optimized though.
Potential reduce by 300 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 3.3 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. Zerex.cz has all CSS files already compressed.
Number of requests can be reduced by 21 (30%)
70
49
The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zerex. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
zerex.cz
362 ms
izerex.cz
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libs.5f2cq.css
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libs.5f2cq.js
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all.min.css
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simple-line-icons.css
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custom-style.css
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gtm.js
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ecmtr-2.4.2.js
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phone-call.svg
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cart.svg
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shipping.svg
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logo.svg
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arrow.svg
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packetaWidget.js
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email-decode.min.js
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autocomplete.js
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autocomplete.css
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zerex.js
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search.js
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zerex.cz accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
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
Heading elements are not in a sequentially-descending order
zerex.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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
zerex.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zerex.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 Zerex.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.
zerex.cz
Open Graph data is detected on the main page of Zerex. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: