Access tickets.ceskafilharmonie.cz. ColosseumTicket | Tickets - culture and events

11

Performance

Renders faster than
24% of other websites
68

Accessibility

Visual factors better than
that of 33% of websites
67

Best Practices

More advanced features
available than in
24% of websites
85

SEO

Google-friendlier than
55% of websites

First Response

527 ms

Resources Loaded

3.9 sec

Page Rendered

241 ms

About Website

Click here to check amazing Tickets Ceskafilharmonie content for Czech Republic. Otherwise, check out these important facts you probably never knew about tickets.ceskafilharmonie.cz

Be inspired, discover new stories and experience new cultural experiences ✓ 800+ events throughout the Czech Republic ✓ 120+ points of sale ✓ Use of benefit systems

Visit tickets.ceskafilharmonie.cz

Key Findings

We analyzed Tickets.ceskafilharmonie.cz page load time and found that the first response time was 527 ms and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value8.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value28.2 s

0/100

25%

SI (Speed Index)

Value14.0 s

1/100

10%

TBT (Total Blocking Time)

Value4,290 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.176

68/100

15%

TTI (Time to Interactive)

Value42.5 s

0/100

10%

tickets.ceskafilharmonie.cz

527 ms

www.colosseumticket.cz

559 ms

en

1155 ms

gtm.js

80 ms

notifee.css

1011 ms

Our browser made a total of 107 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Tickets.ceskafilharmonie.cz, 86% (92 requests) were made to Colosseumticket.cz and 7% (8 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Colosseumticket.cz.

Content Size

4.1 MB

After Optimization

354.1 kB

In fact, the total size of Tickets.ceskafilharmonie.cz main page is 4.1 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. 65% of websites need less resources to load. HTML takes 4.0 MB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 3.7 MB

Original 4.0 MB
After minification 4.0 MB
After compression 328.8 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 3.7 MB or 92% of the original size.

JavaScript Optimization

-78%

Potential reduce by 87.9 kB

Original 113.2 kB
After minification 113.2 kB
After compression 25.3 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 87.9 kB or 78% of the original size.

Requests Now

After Optimization

The browser has sent 96 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tickets Ceskafilharmonie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 63 to 1 for JavaScripts and from 31 to 1 for CSS 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

button, link, and menuitem elements do not have accessible names.

High

ARIA IDs 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

Buttons do not have an accessible name

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

Heading elements are not in a sequentially-descending order

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 experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Areas of Improvement

High

Does not use HTTPS

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

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

High

Links do not have descriptive text

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

EN
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tickets.ceskafilharmonie.cz can be misinterpreted by Google and other search engines. Our service has detected that English 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 Tickets.ceskafilharmonie.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

tickets.ceskafilharmonie.cz

Open Graph description is not detected on the main page of Tickets Ceskafilharmonie. 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

ColosseumTicket | Tickets - culture and events | Prague, Brno, Ostrava and more.

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)