Access i-divadlo.cz. i-divadlo.cz | činohra - alternativa - muzikál

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value6.7 s

36/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.064

97/100

15%

TTI (Time to Interactive)

Value8.3 s

40/100

10%

i-divadlo.cz

344 ms

i-divadlo.cz

464 ms

www.i-divadlo.cz

1678 ms

js

62 ms

style.css

259 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 82% of them (59 requests) were addressed to the original I-divadlo.cz, 4% (3 requests) were made to Code.jquery.com and 3% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (19.8 sec) relates to the external source Toplist.cz.

Content Size

2.1 MB

After Optimization

1.8 MB

In fact, the total size of I-divadlo.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. 45% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 150.6 kB

Original 186.6 kB
After minification 184.3 kB
After compression 36.0 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 150.6 kB or 81% of the original size.

Image Optimization

-3%

Potential reduce by 51.0 kB

Original 1.7 MB
After minification 1.6 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. I Divadlo images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 34.0 kB

Original 116.1 kB
After minification 116.1 kB
After compression 82.1 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 34.0 kB or 29% of the original size.

CSS Optimization

-20%

Potential reduce by 11.5 kB

Original 56.4 kB
After minification 56.4 kB
After compression 44.9 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. I-divadlo.cz needs all CSS files to be minified and compressed as it can save up to 11.5 kB or 20% of the original size.

Requests Now

After Optimization

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of I Divadlo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 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 are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

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

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

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

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 I-divadlo.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 I-divadlo.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

i-divadlo.cz

Open Graph description is not detected on the main page of I Divadlo. 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

i-divadlo.cz | činohra - alternativa - muzikál | Divadelní databáze

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

i-divadlo.cz

i-divadlo.cz

www.i-divadlo.cz

js

style.css

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

i-divadlo.cz

i-divadlo.cz

www.i-divadlo.cz

js

style.css

style_novy.css

style_mobile.css

style_mobile_novy.css

fontawesome_all.css

jquery-ui.css

jquery-1.12.4.js

jquery-ui.js

naseptavac_all.js

global.js

smoothDivScroll.css

lightbox.min.js

lightbox.css

datepicker-cs.js

js

analytics.js

cookie-consent.js

collect

collect

ga-audiences

count.asp

88x31.png

close.png

loading.gif

prev.png

next.png

fb_iko.png

ig_iko.png

logo_web.png

logo_mobile.png

hadi_veritvselmy_745.jpg

plus.gif

minus.gif

img_240514024_560.jpg

sgove_560_1.jpg

shab_560.jpg

img_240430206_380.jpg

dfricova_560.jpg

img_240425059_380.jpg