Tools & Wizards About Us
naslevy.cz screenshot

Report Summary

  • 13

    Performance

    Renders faster than
    25% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

naslevy.cz

AliExpress - Online Shopping for Popular Electronics, Fashion, Home & Garden, Toys & Sports, Automobiles and More.

Page Load Speed

5.2 sec in total

First Response

442 ms

Resources Loaded

4.3 sec

Page Rendered

395 ms

naslevy.cz screenshot

About Website

Visit naslevy.cz now to see the best up-to-date Naslevy content and also check out these interesting facts you probably never knew about naslevy.cz

Online shopping for the latest electronics, fashion, phone accessories, computer electronics, toys, home&garden, home appliances, tools, home improvement and more.

Visit naslevy.cz

Key Findings

We analyzed Naslevy.cz page load time and found that the first response time was 442 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

naslevy.cz performance score

13

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value27.5 s

0/100

25%

SI (Speed Index)

Value16.4 s

0/100

10%

TBT (Total Blocking Time)

Value6,770 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.139

79/100

15%

TTI (Time to Interactive)

Value24.5 s

0/100

10%

Network Requests Diagram

naslevy.cz

442 ms

22 ms

best.aliexpress.com

284 ms

best.aliexpress.com

486 ms

index.css

267 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Naslevy.cz, 38% (30 requests) were made to Ae-pic-a1.aliexpress-media.com and 29% (23 requests) were made to Ae01.alicdn.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Bdc.alibabachengdun.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (61%)

Content Size

2.1 MB

After Optimization

833.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Naslevy.cz main page is 2.1 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. Javascripts take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 297.8 kB

  • Original 343.2 kB
  • After minification 334.7 kB
  • After compression 45.4 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 297.8 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 16 B

  • Original 2.7 kB
  • After minification 2.7 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. Naslevy images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 902.5 kB

  • Original 1.6 MB
  • After minification 1.6 MB
  • After compression 724.2 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 902.5 kB or 55% of the original size.

CSS Optimization

-64%

Potential reduce by 107.6 kB

  • Original 169.1 kB
  • After minification 168.9 kB
  • After compression 61.5 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. Naslevy.cz needs all CSS files to be minified and compressed as it can save up to 107.6 kB or 64% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (40%)

Requests Now

73

After Optimization

44

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Naslevy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

naslevy.cz

naslevy.cz

442 ms

22 ms

best.aliexpress.com

best.aliexpress.com

284 ms

best.aliexpress.com

best.aliexpress.com

486 ms

index.css

index.css

267 ms

ae-header.css

ae-header.css

294 ms

ae-header.js

ae-header.js

313 ms

index.css

index.css

291 ms

index.js

index.js

442 ms

_cross_page_loader_.js

_cross_page_loader_.js

311 ms

index.css

index.css

309 ms

index.js

index.js

310 ms

index.js

index.js

438 ms

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index.js

437 ms

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439 ms

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465 ms

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474 ms

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469 ms

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467 ms

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469 ms

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474 ms

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477 ms

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478 ms

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477 ms

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475 ms

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479 ms

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479 ms

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483 ms

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480 ms

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480 ms

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482 ms

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488 ms

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486 ms

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485 ms

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485 ms

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486 ms

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303 ms

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449 ms

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454 ms

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454 ms

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153 ms

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148 ms

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263 ms

et_n.js

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1178 ms

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1489 ms

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1528 ms

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237 ms

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1173 ms

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info

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18 ms

Accessibility Review

naslevy.cz accessibility score

64

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a valid value for its [lang] attribute.

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

naslevy.cz best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

naslevy.cz SEO score

71

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Document doesn't have a valid hreflang

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 doesn't use legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Naslevy.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Naslevy.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.

Social Sharing Optimization

naslevy.cz

Open Graph description is not detected on the main page of Naslevy. 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: