Access ostrovni-elektrarny.cz. Ostrovní elektrárny, s.r.o

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

51/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value5.5 s

54/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.056

98/100

15%

TTI (Time to Interactive)

Value5.5 s

70/100

10%

ostrovni-elektrarny.cz

427 ms

screen.css

117 ms

global.js

227 ms

eshop.css

231 ms

element.js

35 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 39% of them (30 requests) were addressed to the original Ostrovni-elektrarny.cz, 11% (8 requests) were made to Apis.google.com and 9% (7 requests) were made to Translate.googleapis.com. The less responsive or slowest element that took the longest time to load (956 ms) relates to the external source Hyperzbozi.cz.

Content Size

539.4 kB

After Optimization

395.3 kB

In fact, the total size of Ostrovni-elektrarny.cz main page is 539.4 kB. 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 331.6 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 39.3 kB

Original 55.0 kB
After minification 48.6 kB
After compression 15.7 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 6.4 kB, which is 12% 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 39.3 kB or 71% of the original size.

Image Optimization

-20%

Potential reduce by 65.6 kB

Original 331.6 kB
After minification 266.0 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. Obviously, Ostrovni Elektrarny needs image optimization as it can save up to 65.6 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-15%

Potential reduce by 18.4 kB

Original 124.7 kB
After minification 120.9 kB
After compression 106.3 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 18.4 kB or 15% of the original size.

CSS Optimization

-74%

Potential reduce by 20.8 kB

Original 28.1 kB
After minification 21.3 kB
After compression 7.3 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. Ostrovni-elektrarny.cz needs all CSS files to be minified and compressed as it can save up to 20.8 kB or 74% of the original size.

Requests Now

After Optimization

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ostrovni Elektrarny. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts 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

Links do not have a discernible name

These are opportunities to improve the interpretation of your content by users in different locales.

High

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

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

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

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

WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ostrovni-elektrarny.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 Ostrovni-elektrarny.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

ostrovni-elektrarny.cz

Open Graph description is not detected on the main page of Ostrovni Elektrarny. 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

Ostrovní elektrárny, s.r.o

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

ostrovni-elektrarny.cz

screen.css

global.js

eshop.css

element.js

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

ostrovni-elektrarny.cz

screen.css

global.js

eshop.css

element.js

dc.js

all.js

fp.js

pifc.php

logo_heureka.gif

hz-logo-bg.png

partner.gif

logo-nejnakup.gif

icon.php

count.asp

graf_interval.php

pifc.php

pifc.php

victron_multiplus.jpg

graf_interval.php

back_sh_right_top.png

back_sh_right.png

logo.jpg

horni.jpg

ico_category.gif

uvod.jpg

porovnani.jpg

o-nas.jpg

podminky.jpg

faq.jpg

podpora.jpg

kontakt.jpg

stin-vlevo.jpg

tlacitko40x22.jpg

sub_logo.png

sub_category.jpg

NukeWindSolarCapacity.png

tumblr.png

plusone.js

offsite_event.php

__utm.gif

gradient_left.jpg

translateelement.css