Access ocko.tv. OCKO.TV - První česká hudební televize

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

26/100

10%

LCP (Largest Contentful Paint)

Value19.7 s

0/100

25%

SI (Speed Index)

Value7.1 s

31/100

10%

TBT (Total Blocking Time)

Value1,700 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.324

35/100

15%

TTI (Time to Interactive)

Value15.0 s

8/100

10%

502 ms

foundation.css

262 ms

fonts.css

246 ms

modernizr.js

255 ms

ocko.v1.10.css

293 ms

Our browser made a total of 103 requests to load all elements on the main page. We found that 49% of them (50 requests) were addressed to the original Ocko.tv, 8% (8 requests) were made to Tpc.googlesyndication.com and 6% (6 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Ocko.tv.

Content Size

2.7 MB

After Optimization

1.3 MB

In fact, the total size of Ocko.tv main page is 2.7 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. Javascripts take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 172.6 kB

Original 221.6 kB
After minification 214.3 kB
After compression 48.9 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 172.6 kB or 78% of the original size.

Image Optimization

-6%

Potential reduce by 48.7 kB

Original 789.9 kB
After minification 741.2 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. OCKO images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 882.3 kB

Original 1.4 MB
After minification 1.4 MB
After compression 480.3 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 882.3 kB or 65% of the original size.

CSS Optimization

-88%

Potential reduce by 251.6 kB

Original 285.2 kB
After minification 235.1 kB
After compression 33.6 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. Ocko.tv needs all CSS files to be minified and compressed as it can save up to 251.6 kB or 88% 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 OCKO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 40 to 1 for JavaScripts and from 4 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 semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Low

No form fields have multiple labels

High

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

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 Ocko.tv 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 Ocko.tv 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

ocko.tv

Open Graph data is detected on the main page of OCKO. 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

OCKO.TV - První česká hudební televize

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

foundation.css

fonts.css

modernizr.js

ocko.v1.10.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

foundation.css

fonts.css

modernizr.js

ocko.v1.10.css

uni.js

satelliteLib-48fbeae0fb292bfc246d8faf8e887c00420fc0c1.js

addthis_widget.js

code

jquery-1.11.1.min.js

foundation.min.js

foundation.clearing.js

amplify.min.js

jwplayer.js

swfobject.js

jquery.weebo.jform.js

julia-player.js

layout.js

main.js

xgemius.js

analytics.js

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logo.jpg

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soc_icon_yt.png

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all.js