Access polar.cz. POLAR - Moravskoslezská regionální televize

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value33.2 s

0/100

10%

TBT (Total Blocking Time)

Value3,510 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.063

97/100

15%

TTI (Time to Interactive)

Value37.6 s

0/100

10%

polar.cz

355 ms

polar.cz

807 ms

video-js.min.css

206 ms

index.css

281 ms

font-google.min.css

292 ms

Our browser made a total of 146 requests to load all elements on the main page. We found that 99% of them (144 requests) were addressed to the original Polar.cz, 1% (1 request) were made to Ssp.imedia.cz and 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Polar.cz.

Content Size

6.5 MB

After Optimization

6.1 MB

In fact, the total size of Polar.cz main page is 6.5 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 5.5 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 343.3 kB

Original 375.3 kB
After minification 209.3 kB
After compression 32.0 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. This page needs HTML code to be minified as it can gain 166.0 kB, which is 44% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 343.3 kB or 91% of the original size.

Image Optimization

-0%

Potential reduce by 6.4 kB

Original 5.5 MB
After minification 5.5 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. POLAR images are well optimized though.

JavaScript Optimization

-11%

Potential reduce by 50.8 kB

Original 455.9 kB
After minification 455.5 kB
After compression 405.1 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 50.8 kB or 11% of the original size.

CSS Optimization

-21%

Potential reduce by 49.8 kB

Original 238.5 kB
After minification 237.9 kB
After compression 188.8 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. Polar.cz needs all CSS files to be minified and compressed as it can save up to 49.8 kB or 21% of the original size.

Requests Now

141

After Optimization

The browser has sent 141 CSS, Javascripts, AJAX and image requests in order to completely render the main page of POLAR. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 18 to 1 for CSS 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 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

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

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

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 Polar.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 Polar.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

polar.cz

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

POLAR - Moravskoslezská regionální 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

polar.cz

polar.cz

video-js.min.css

index.css

font-google.min.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

polar.cz

polar.cz

video-js.min.css

index.css

font-google.min.css

bootstrap.min.css

all.min.css

animate.min.css

simple-line-icons.min.css

owl-carousel.min.css

owl-theme.default.min.css

pnotify.min.css

theme-admin-extension.min.css

theme-admin-extension.min.css

theme.min.css

theme-elements.min.css

theme-blog.min.css

skin.min.css

custom.min.css

jquery.min.js

modernizr.min.js

custom.min.js

ssp.js

appear.min.js

easing.min.js

cookie.min.js

popper.min.js

bootstrap.bundle.min.js

moment.min.js

cs_CZ.min.js

validation.min.js

cs_CZ.min.js

easy-pie-chart.min.js

gmap.min.js

lazysizes.min.js

isotope.min.js

owl-carousel.min.js

magnific-popup.min.js

js

cs_CZ.js

pnotify.min.js

vide.min.js

vivus.min.js