Tools & Wizards About Us
zeleny-zakal.cz screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

zeleny-zakal.cz

Úvod | Zelený Zákal

Page Load Speed

4.4 sec in total

First Response

465 ms

Resources Loaded

3.8 sec

Page Rendered

192 ms

zeleny-zakal.cz screenshot

About Website

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

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Visit zeleny-zakal.cz

Key Findings

We analyzed Zeleny-zakal.cz page load time and found that the first response time was 465 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

zeleny-zakal.cz performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value7.2 s

5/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.029

100/100

15%

TTI (Time to Interactive)

Value7.5 s

48/100

10%

Network Requests Diagram

www.zeleny-zakal.cz

465 ms

main.css

227 ms

print.css

233 ms

font0.css

238 ms

jquery.min.js

1078 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 83% of them (43 requests) were addressed to the original Zeleny-zakal.cz, 8% (4 requests) were made to Media.meditorial.cz and 8% (4 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Zeleny-zakal.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 559.1 kB (62%)

Content Size

902.3 kB

After Optimization

343.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zeleny-zakal.cz main page is 902.3 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. 25% of websites need less resources to load. Javascripts take 698.1 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 19.9 kB

  • Original 26.6 kB
  • After minification 23.5 kB
  • After compression 6.8 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 3.1 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 19.9 kB or 75% of the original size.

Image Optimization

-18%

Potential reduce by 24.8 kB

  • Original 139.2 kB
  • After minification 114.4 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, Zeleny Zakal needs image optimization as it can save up to 24.8 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-69%

Potential reduce by 483.0 kB

  • Original 698.1 kB
  • After minification 692.2 kB
  • After compression 215.0 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 483.0 kB or 69% of the original size.

CSS Optimization

-82%

Potential reduce by 31.4 kB

  • Original 38.4 kB
  • After minification 32.8 kB
  • After compression 7.0 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. Zeleny-zakal.cz needs all CSS files to be minified and compressed as it can save up to 31.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (48%)

Requests Now

50

After Optimization

26

  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zeleny Zakal. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.zeleny-zakal.cz

www.zeleny-zakal.cz

465 ms

main.css

main.css

227 ms

print.css

print.css

233 ms

font0.css

font0.css

238 ms

jquery.min.js

jquery.min.js

1078 ms

md.js

md.js

983 ms

ribbon.css

ribbon.css

642 ms

basic.css

basic.css

234 ms

bg-body.gif

bg-body.gif

233 ms

get_flash_player.gif

get_flash_player.gif

27 ms

bryle_dioptricke_1-f260_120

bryle_dioptricke_1-f260_120

273 ms

print-header.gif

print-header.gif

355 ms

pfizer.png

pfizer.png

237 ms

bolest_cocky-f179_121

bolest_cocky-f179_121

306 ms

doktor_pacient3-f119_91

doktor_pacient3-f119_91

281 ms

oko_zelene-f119_91

oko_zelene-f119_91

500 ms

zelenyzakal_video-f179_121

zelenyzakal_video-f179_121

741 ms

alive_vitamin-f188_100

alive_vitamin-f188_100

563 ms

dm-logo.gif

dm-logo.gif

511 ms

bg-top-menu-item.gif

bg-top-menu-item.gif

507 ms

bg-center.gif

bg-center.gif

567 ms

bg-background.jpg

bg-background.jpg

840 ms

logo08.jpg

logo08.jpg

752 ms

bg-bookmark-laik-act.jpg

bg-bookmark-laik-act.jpg

753 ms

bg-bookmark-specialist.jpg

bg-bookmark-specialist.jpg

794 ms

hd-anketa.gif

hd-anketa.gif

797 ms

bg-eye-test-top.gif

bg-eye-test-top.gif

944 ms

hd-jak-vidi.gif

hd-jak-vidi.gif

974 ms

bg-eye-test-bottom.gif

bg-eye-test-bottom.gif

976 ms

hd-video.gif

hd-video.gif

1029 ms

bg-font-size.gif

bg-font-size.gif

1043 ms

hd-font-size.gif

hd-font-size.gif

1072 ms

bg-font-size1.gif

bg-font-size1.gif

1178 ms

bg-font-size2.gif

bg-font-size2.gif

1208 ms

bg-font-size3.gif

bg-font-size3.gif

1214 ms

bg-search.gif

bg-search.gif

1262 ms

hd-search.gif

hd-search.gif

1273 ms

bg-right-box.gif

bg-right-box.gif

1305 ms

ribbon.gif

ribbon.gif

118 ms

hd-consulting.gif

hd-consulting.gif

1388 ms

bg-consulting.jpg

bg-consulting.jpg

1424 ms

hd-glaukom.gif

hd-glaukom.gif

1424 ms

bg-glaukom.jpg

bg-glaukom.jpg

1476 ms

bg-arrow-2right.gif

bg-arrow-2right.gif

1489 ms

hd-competition.gif

hd-competition.gif

1523 ms

bg-spolupracujeme.gif

bg-spolupracujeme.gif

1618 ms

dc.js

dc.js

29 ms

__utm.gif

__utm.gif

12 ms

__utm.gif

__utm.gif

20 ms

__utm.gif

__utm.gif

21 ms

hd-spolupracujeme.gif

hd-spolupracujeme.gif

1474 ms

modal_icon_close.png

modal_icon_close.png

1469 ms

Accessibility Review

zeleny-zakal.cz accessibility score

61

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 [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

High

<object> elements do not have alternate text

Best Practices

zeleny-zakal.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

zeleny-zakal.cz SEO score

54

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

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zeleny-zakal.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Zeleny-zakal.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

zeleny-zakal.cz

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