Access plzen.cz. Plzeň CZ

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

8/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

17/100

25%

SI (Speed Index)

Value13.1 s

2/100

10%

TBT (Total Blocking Time)

Value640 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.242

51/100

15%

TTI (Time to Interactive)

Value19.7 s

2/100

10%

plzen.cz

412 ms

plzen.cz

1031 ms

k2.css

288 ms

content.css

297 ms

nucleus.css

300 ms

Our browser made a total of 87 requests to load all elements on the main page. We found that 90% of them (78 requests) were addressed to the original Plzen.cz, 3% (3 requests) were made to Googletagmanager.com and 2% (2 requests) were made to Vjs.zencdn.net. The less responsive or slowest element that took the longest time to load (3.3 sec) belongs to the original domain Plzen.cz.

Content Size

4.5 MB

After Optimization

4.2 MB

In fact, the total size of Plzen.cz main page is 4.5 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. 65% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 133.1 kB

Original 151.0 kB
After minification 101.7 kB
After compression 18.0 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 49.4 kB, which is 33% 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 133.1 kB or 88% of the original size.

Image Optimization

-2%

Potential reduce by 66.1 kB

Original 3.9 MB
After minification 3.9 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. Plzen images are well optimized though.

JavaScript Optimization

-12%

Potential reduce by 34.2 kB

Original 290.7 kB
After minification 290.7 kB
After compression 256.4 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 34.2 kB or 12% of the original size.

CSS Optimization

-8%

Potential reduce by 5.8 kB

Original 72.2 kB
After minification 72.2 kB
After compression 66.4 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. Plzen.cz has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Plzen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 10 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.

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

Heading elements are not in a sequentially-descending order

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

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

CS
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Plzen.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 Plzen.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

plzen.cz

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

Plzeň CZ | Zprávy Plzeň

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

plzen.cz

plzen.cz

k2.css

content.css

nucleus.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

plzen.cz

plzen.cz

k2.css

content.css

nucleus.css

hydrogen_12.css

bootstrap-gantry.css

joomla.css

hydrogen-joomla_12.css

custom_12.css

cpnb-style.min.css

jquery.min.js

jquery-noconflict.js

jquery-migrate.min.js

k2.frontend.js

bootstrap.min.js

cookies-policy-notification-bar.min.js

lazyloadforjoomla-jquery.js

video-js.css

video.min.js

js

main.js

myJS.js

gtm.js

plzencz-white.svg

plzencz-color.svg

v2.jpg

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instagram-ico.svg

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