Tools & Wizards About Us
kotle-verner.cz screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

kotle-verner.cz

Kotle na pelety a tuhá paliva, kotle na dřevo a interiérové kotle (krbová kamna s výměníkem) | Kotle Verner

Page Load Speed

3.6 sec in total

First Response

1.1 sec

Resources Loaded

2.4 sec

Page Rendered

196 ms

kotle-verner.cz screenshot

About Website

Click here to check amazing Kotle Verner content. Otherwise, check out these important facts you probably never knew about kotle-verner.cz

Kvalitní kotle na pelety a tuhá paliva. Zplyňovací kotle na dřevo a luxusní interiérové kotle a krbová kamna s výměníkem.

Visit kotle-verner.cz

Key Findings

We analyzed Kotle-verner.cz page load time and found that the first response time was 1.1 sec and then it took 2.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

kotle-verner.cz performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

37/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value4.6 s

70/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.4 s

93/100

10%

Network Requests Diagram

kotle-verner.cz

1052 ms

style3.css

119 ms

mootools-core-1.4.5.js

422 ms

mootools-more-1.4.0.1FULL.js

435 ms

multibox.css

229 ms

Our browser made a total of 44 requests to load all elements on the main page. We found that 93% of them (41 requests) were addressed to the original Kotle-verner.cz, 5% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Maps.google.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Kotle-verner.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 135.3 kB (14%)

Content Size

976.1 kB

After Optimization

840.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kotle-verner.cz main page is 976.1 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. 35% of websites need less resources to load. Images take 827.5 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 17.7 kB

  • Original 22.7 kB
  • After minification 16.0 kB
  • After compression 4.9 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. This page needs HTML code to be minified as it can gain 6.7 kB, which is 29% 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 17.7 kB or 78% of the original size.

Image Optimization

-9%

Potential reduce by 78.2 kB

  • Original 827.5 kB
  • After minification 749.3 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. Kotle Verner images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 33.6 kB

  • Original 114.2 kB
  • After minification 114.2 kB
  • After compression 80.6 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 33.6 kB or 29% of the original size.

CSS Optimization

-50%

Potential reduce by 5.9 kB

  • Original 11.8 kB
  • After minification 10.4 kB
  • After compression 5.9 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. Kotle-verner.cz needs all CSS files to be minified and compressed as it can save up to 5.9 kB or 50% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (45%)

Requests Now

42

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kotle Verner. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

kotle-verner.cz

kotle-verner.cz

1052 ms

style3.css

style3.css

119 ms

mootools-core-1.4.5.js

mootools-core-1.4.5.js

422 ms

mootools-more-1.4.0.1FULL.js

mootools-more-1.4.0.1FULL.js

435 ms

multibox.css

multibox.css

229 ms

overlay-SB.js

overlay-SB.js

218 ms

multibox1.js

multibox1.js

223 ms

MyTabs.js

MyTabs.js

227 ms

maps

maps

63 ms

functions.js

functions.js

320 ms

urchin.js

urchin.js

6 ms

general.css

general.css

206 ms

common.css

common.css

212 ms

bg-top.png

bg-top.png

122 ms

bg-bottom.png

bg-bottom.png

123 ms

automaticke-kotle-verner-a60274.jpg

automaticke-kotle-verner-a60274.jpg

325 ms

zplynovaci-kotle-na-kusove-drevo35.jpg

zplynovaci-kotle-na-kusove-drevo35.jpg

329 ms

interierove-kotle-a-krbova-kamna-s-vymenikem-kopie23.jpg

interierove-kotle-a-krbova-kamna-s-vymenikem-kopie23.jpg

531 ms

automaticke-kotle-na-pelety-agropelety-a-obili11.jpg

automaticke-kotle-na-pelety-agropelety-a-obili11.jpg

423 ms

product-krb-kamna2.png

product-krb-kamna2.png

230 ms

product-kotle-kusove.png

product-kotle-kusove.png

232 ms

product-kotle-automaticke.png

product-kotle-automaticke.png

333 ms

product-kotle-prumyslove.png

product-kotle-prumyslove.png

335 ms

logo.png

logo.png

430 ms

lang-cz.png

lang-cz.png

434 ms

lang-sk.png

lang-sk.png

437 ms

lang-en.png

lang-en.png

436 ms

lang-de.png

lang-de.png

529 ms

lang-ru.png

lang-ru.png

530 ms

banner-arrow-left.png

banner-arrow-left.png

525 ms

banner-arrow-right.png

banner-arrow-right.png

525 ms

product-box.png

product-box.png

526 ms

news-shadow.png

news-shadow.png

620 ms

bg-languages.png

bg-languages.png

618 ms

button-blue.png

button-blue.png

615 ms

icon-facebook.png

icon-facebook.png

626 ms

icon-youtube.png

icon-youtube.png

627 ms

icon-twitter.png

icon-twitter.png

627 ms

icon-google.png

icon-google.png

716 ms

logo-footer.png

logo-footer.png

718 ms

button-support.png

button-support.png

720 ms

button-write.png

button-write.png

727 ms

__utm.gif

__utm.gif

4 ms

print.css

print.css

104 ms

Accessibility Review

kotle-verner.cz accessibility score

72

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Internationalization and localization

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

Impact

Issue

High

<html> element does not have a valid value for its [lang] attribute.

Names and labels

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.

Impact

Issue

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

kotle-verner.cz best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

kotle-verner.cz SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    CZ

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kotle-verner.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it does not match the claimed language. Our system also found out that Kotle-verner.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

kotle-verner.cz

Open Graph description is not detected on the main page of Kotle Verner. 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: