Tools & Wizards About Us
alza.sk screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

alza.sk

Alza.sk – rýchly a pohodlný nákup odkiaľkoľvek | Alza.sk

Page Load Speed

574 ms in total

First Response

107 ms

Resources Loaded

377 ms

Page Rendered

90 ms

alza.sk screenshot

About Website

Click here to check amazing Alza content for Slovakia. Otherwise, check out these important facts you probably never knew about alza.sk

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Key Findings

We analyzed Alza.sk page load time and found that the first response time was 107 ms and then it took 467 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

alza.sk performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value12.5 s

0/100

25%

SI (Speed Index)

Value11.0 s

6/100

10%

TBT (Total Blocking Time)

Value3,440 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.456

20/100

15%

TTI (Time to Interactive)

Value19.2 s

2/100

10%

Network Requests Diagram

alza.sk

107 ms

alza.sk

64 ms

v1

66 ms

Logo-White-Alza-sk.svg

195 ms

vedd3670a3b1c4e178fdfb0cc912d969e1713874337387

79 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that 60% of them (3 requests) were addressed to the original Alza.sk, 20% (1 request) were made to Cdn.alza.cz and 20% (1 request) were made to Static.cloudflareinsights.com. The less responsive or slowest element that took the longest time to load (195 ms) relates to the external source Cdn.alza.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 3.1 MB (71%)

Content Size

4.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Alza.sk main page is 4.4 MB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. CSS take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-58%

Potential reduce by 38.3 kB

  • Original 66.5 kB
  • After minification 66.5 kB
  • After compression 28.2 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 38.3 kB or 58% of the original size.

Image Optimization

-10%

Potential reduce by 62.1 kB

  • Original 653.7 kB
  • After minification 591.5 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. Alza images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 598.4 kB

  • Original 851.4 kB
  • After minification 844.1 kB
  • After compression 253.0 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 598.4 kB or 70% of the original size.

CSS Optimization

-85%

Potential reduce by 2.4 MB

  • Original 2.8 MB
  • After minification 2.8 MB
  • After compression 419.5 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. Alza.sk needs all CSS files to be minified and compressed as it can save up to 2.4 MB or 85% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

3

After Optimization

3

  • Images
  • JavaScript

The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alza. According to our analytics all requests are already optimized.

Network Requests Diagram

alza.sk

alza.sk

107 ms

alza.sk

alza.sk

64 ms

v1

v1

66 ms

Logo-White-Alza-sk.svg

Logo-White-Alza-sk.svg

195 ms

vedd3670a3b1c4e178fdfb0cc912d969e1713874337387

vedd3670a3b1c4e178fdfb0cc912d969e1713874337387

79 ms

Accessibility Review

alza.sk accessibility score

98

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Best Practices

alza.sk best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

alza.sk SEO score

100

Search Engine Optimization Advices

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    SK

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alza.sk can be misinterpreted by Google and other search engines. Our service has detected that Slovak 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.sk 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.

Social Sharing Optimization

alza.sk

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: