Access losy.sazka.cz. Stírací losy a online losy

name

value

score

weighting

FCP (First Contentful Paint)

Value5.9 s

4/100

10%

LCP (Largest Contentful Paint)

Value16.3 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value4,360 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.184

66/100

15%

TTI (Time to Interactive)

Value18.9 s

3/100

10%

679 ms

css

80 ms

jquery.min.js

90 ms

app.css

220 ms

js

113 ms

Our browser made a total of 119 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Losy.sazka.cz, 10% (12 requests) were made to Track.adform.net and 3% (4 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Sazka.cz.

Content Size

5.4 MB

After Optimization

4.5 MB

In fact, the total size of Losy.sazka.cz main page is 5.4 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. 70% of websites need less resources to load. Images take 4.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 113.4 kB

Original 133.7 kB
After minification 113.1 kB
After compression 20.3 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 20.6 kB, which is 15% 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 113.4 kB or 85% of the original size.

Image Optimization

-1%

Potential reduce by 66.3 kB

Original 4.4 MB
After minification 4.4 MB

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. Losy Sazka images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 274.3 kB

Original 369.0 kB
After minification 308.5 kB
After compression 94.7 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 274.3 kB or 74% of the original size.

CSS Optimization

-89%

Potential reduce by 385.2 kB

Original 434.9 kB
After minification 295.6 kB
After compression 49.7 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. Losy.sazka.cz needs all CSS files to be minified and compressed as it can save up to 385.2 kB or 89% of the original size.

Requests Now

114

After Optimization

The browser has sent 114 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Losy Sazka. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

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.

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

These are opportunities to improve keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

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.

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

High

Links are not crawlable

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

CS
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Losy.sazka.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 Losy.sazka.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

losy.sazka.cz

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Stírací losy a online losy | Sazka.cz

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

css

jquery.min.js

app.css

js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

css

jquery.min.js

app.css

js

app.js

WebResource.axd

ScriptResource.axd

ScriptResource.axd

sazka-check.js

logo.png

instagram.svg

czt.png

oly_1.png

euro.png

wla.png

gtm.js

sdk.js

widgets.js

search-arrow.png

search-btn.png

rentier2.jpg

btn-blue-hover.png

Karty-Mega-Rentier.jpg.aspx

black-opacity.png

corner.png

game-shadow.png

megarentier.jpg

Karty-Superrentier-big.jpg

Karty-Superrentier.jpg

Karty-Rentier.png

rentier.jpg

Karty-Hodne-Stesti.png

hodne-stesti.jpg

Karty-Kufrpenez-big.jpg

Karty-Kufrpenez.jpg

Karty-Milionoveprekvapeni-big.jpg

Karty-Milionoveprekvapeni.jpg

Karty-Velka-Cerna-Perla-big.jpg

Karty-Velka-Cerna-Perla.jpg

Karty-cenra-perla-big.png

Perla.png

Karty-Cash-big.jpg

Karty-Cash_1.jpg

Karty-Supercash-big.jpg