Report Summary

  • 59

    Performance

    Renders faster than
    76% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

csve.cz

ČSVE - Větrné elektrárny | Větrná energie

Page Load Speed

2.5 sec in total

First Response

589 ms

Resources Loaded

1.7 sec

Page Rendered

200 ms

csve.cz screenshot

About Website

Visit csve.cz now to see the best up-to-date Csve content for Czech Republic and also check out these interesting facts you probably never knew about csve.cz

Česká společnost pro větrnou energii je dobrovolná organizace fyzických a právnických osob, které pracují v oboru využívání větrné energie nebo mají k tomuto oboru zájmový vztah. Cílem společnosti je ...

Visit csve.cz

Key Findings

We analyzed Csve.cz page load time and found that the first response time was 589 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

csve.cz performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

14/100

25%

SI (Speed Index)

Value5.0 s

64/100

10%

TBT (Total Blocking Time)

Value360 ms

72/100

30%

CLS (Cumulative Layout Shift)

Value0.011

100/100

15%

TTI (Time to Interactive)

Value5.1 s

75/100

10%

Network Requests Diagram

csve.cz

589 ms

css

25 ms

ext-all.css

199 ms

screen.css

205 ms

tiny-slideshow-style.css

196 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 88% of them (38 requests) were addressed to the original Csve.cz, 5% (2 requests) were made to Google-analytics.com and 5% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (602 ms) belongs to the original domain Csve.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 215.3 kB (29%)

Content Size

735.3 kB

After Optimization

520.0 kB

In fact, the total size of Csve.cz main page is 735.3 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 462.2 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 17.6 kB

  • Original 22.2 kB
  • After minification 15.2 kB
  • After compression 4.6 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 7.0 kB, which is 31% 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 17.6 kB or 79% of the original size.

Image Optimization

-5%

Potential reduce by 21.7 kB

  • Original 462.2 kB
  • After minification 440.5 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. Csve images are well optimized though.

JavaScript Optimization

-58%

Potential reduce by 76.2 kB

  • Original 132.2 kB
  • After minification 129.0 kB
  • After compression 55.9 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 76.2 kB or 58% of the original size.

CSS Optimization

-84%

Potential reduce by 99.8 kB

  • Original 118.7 kB
  • After minification 105.6 kB
  • After compression 18.9 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. Csve.cz needs all CSS files to be minified and compressed as it can save up to 99.8 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (25%)

Requests Now

40

After Optimization

30

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Csve. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

csve.cz accessibility score

67

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

csve.cz best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

csve.cz SEO score

69

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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 Csve.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 Csve.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

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