Access seznam.cz. Seznam – najdu tam, co neznám

seznam.cz screenshot

36

Performance

Renders faster than
56% of other websites
79

Accessibility

Visual factors better than
that of 48% of websites
67

Best Practices

More advanced features
available than in
24% of websites
86

SEO

Google-friendlier than
60% of websites

First Response

376 ms

Resources Loaded

53.7 sec

Page Rendered

13.3 sec

seznam.cz screenshot

About Website

Click here to check amazing Seznam content for Czech Republic. Otherwise, check out these important facts you probably never knew about seznam.cz

Nejnavštěvovanější český internetový portál nabízející vyhledávač, e-mail, aktuální zprávy, předpověď počasí a odkazy, které se mohou hodit.

Visit seznam.cz

Key Findings

We analyzed Seznam.cz page load time and found that the first response time was 376 ms and then it took 67 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 3 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

69/100

25%

SI (Speed Index)

Value18.4 s

0/100

10%

TBT (Total Blocking Time)

Value12,600 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.123

83/100

15%

TTI (Time to Interactive)

Value25.7 s

0/100

10%

seznam.cz

376 ms

www.seznam.cz

1055 ms

homepage-skin-default.min.css

928 ms

VC9Cg7.png

3784 ms

5dfb93f1d557e1f5b2ba0300-296677.jpg

3600 ms

Our browser made a total of 178 requests to load all elements on the main page. We found that 4% of them (8 requests) were addressed to the original Seznam.cz, 35% (62 requests) were made to D32-a.sdn.cz and 7% (13 requests) were made to I.imedia.cz. The less responsive or slowest element that took the longest time to load (27.3 sec) relates to the external source Geo.seznam.cz.

Content Size

1.0 MB

After Optimization

400.3 kB

In fact, the total size of Seznam.cz main page is 1.0 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. 60% of websites need less resources to load. HTML takes 409.9 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 336.9 kB

Original 409.9 kB
After minification 409.6 kB
After compression 73.1 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. 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 336.9 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 964 B

Original 267.2 kB
After minification 266.3 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. Seznam images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 40.0 kB

Original 63.4 kB
After minification 49.1 kB
After compression 23.4 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 40.0 kB or 63% of the original size.

CSS Optimization

-86%

Potential reduce by 236.3 kB

Original 273.9 kB
After minification 273.7 kB
After compression 37.6 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. Seznam.cz needs all CSS files to be minified and compressed as it can save up to 236.3 kB or 86% of the original size.

Requests Now

147

After Optimization

93

The browser has sent 147 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Seznam. 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 as a result speed up the page load time.

Accessibility Issues

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

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

These are opportunities to improve keyboard navigation in your application.

High

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

High

Heading elements are not in a sequentially-descending order

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

High

Displays images with incorrect aspect ratio

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

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

High

Image elements do not have [alt] attributes

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

Language and Encoding

Language Detected

CS
Language Claimed

CS
Encoding

UTF-8

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

seznam.cz

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