Access zdenekizer.cz. Zdeněk Izer

Report Summary

About Website

Click here to check amazing Zdenek Izer content. Otherwise, check out these important facts you probably never knew about zdenekizer.cz

Zdeněk Izer v zábavné show, která nenechá vaše bránice ani na chvíli v klidu!

Visit zdenekizer.cz

name

value

score

weighting

FCP (First Contentful Paint)

Value7.5 s

1/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value4,930 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.238

52/100

15%

TTI (Time to Interactive)

Value15.9 s

6/100

10%

zdenekizer.cz

364 ms

www.zdenekizer.cz

491 ms

lista.css

720 ms

main.css

233 ms

jquery-1.10.1.min.js

1066 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 9% of them (5 requests) were addressed to the original Zdenekizer.cz, 30% (17 requests) were made to Kulturniportal.cz and 21% (12 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Kulturniportal.cz.

Content Size

734.8 kB

After Optimization

262.9 kB

In fact, the total size of Zdenekizer.cz main page is 734.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Javascripts take 607.5 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 55.5 kB

Original 79.3 kB
After minification 78.4 kB
After compression 23.8 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 55.5 kB or 70% of the original size.

Image Optimization

-4%

Potential reduce by 954 B

Original 26.6 kB
After minification 25.6 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. Zdenek Izer images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 399.1 kB

Original 607.5 kB
After minification 587.4 kB
After compression 208.4 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 399.1 kB or 66% of the original size.

CSS Optimization

-76%

Potential reduce by 16.3 kB

Original 21.4 kB
After minification 16.5 kB
After compression 5.1 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. Zdenekizer.cz needs all CSS files to be minified and compressed as it can save up to 16.3 kB or 76% of the original size.

Requests Now

After Optimization

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zdenek Izer. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

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

These items highlight common accessibility best practices.

High

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

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

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 Zdenekizer.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 Zdenekizer.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

zdenekizer.cz

Open Graph data is detected on the main page of Zdenek Izer. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

Zdeněk Izer

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)