Tools & Wizards About Us
kultura21.cz screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

kultura21.cz

Kultura21.cz

Page Load Speed

6.4 sec in total

First Response

394 ms

Resources Loaded

5.5 sec

Page Rendered

568 ms

kultura21.cz screenshot

About Website

Click here to check amazing Kultura21 content for Czech Republic. Otherwise, check out these important facts you probably never knew about kultura21.cz

Hudební, filmové, divadelní akce. Výtvarné umění. Události v kultuře z celé České republiky na jednom místě.

Visit kultura21.cz

Key Findings

We analyzed Kultura21.cz page load time and found that the first response time was 394 ms and then it took 6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

kultura21.cz performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value9.3 s

1/100

25%

SI (Speed Index)

Value12.9 s

2/100

10%

TBT (Total Blocking Time)

Value2,810 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.071

96/100

15%

TTI (Time to Interactive)

Value19.9 s

2/100

10%

Network Requests Diagram

kultura21.cz

394 ms

kultura21.cz

1972 ms

js

92 ms

sdk.js

26 ms

style.css

323 ms

Our browser made a total of 112 requests to load all elements on the main page. We found that 68% of them (76 requests) were addressed to the original Kultura21.cz, 7% (8 requests) were made to Static.xx.fbcdn.net and 4% (5 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Kultura21.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 215.8 kB (9%)

Content Size

2.4 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kultura21.cz main page is 2.4 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 84.7 kB

  • Original 115.7 kB
  • After minification 108.6 kB
  • After compression 31.0 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 84.7 kB or 73% of the original size.

Image Optimization

-3%

Potential reduce by 54.9 kB

  • Original 1.9 MB
  • After minification 1.8 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. Kultura21 images are well optimized though.

JavaScript Optimization

-23%

Potential reduce by 71.5 kB

  • Original 308.1 kB
  • After minification 307.0 kB
  • After compression 236.7 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 71.5 kB or 23% of the original size.

CSS Optimization

-6%

Potential reduce by 4.7 kB

  • Original 72.5 kB
  • After minification 72.5 kB
  • After compression 67.8 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. Kultura21.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 62 (58%)

Requests Now

106

After Optimization

44

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kultura21. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

kultura21.cz

kultura21.cz

394 ms

kultura21.cz

kultura21.cz

1972 ms

js

js

92 ms

sdk.js

sdk.js

26 ms

style.css

style.css

323 ms

mod_janews_fp.css

mod_janews_fp.css

403 ms

style.css

style.css

406 ms

ja.news.css

ja.news.css

398 ms

mootools.js

mootools.js

197 ms

caption.js

caption.js

418 ms

rokslideshow.js

rokslideshow.js

417 ms

ja.news.js

ja.news.js

541 ms

bgMax.min.js

bgMax.min.js

622 ms

system.css

system.css

621 ms

general.css

general.css

628 ms

template.css

template.css

641 ms

typo.css

typo.css

640 ms

ja.script.js

ja.script.js

556 ms

ja.moomenu.css

ja.moomenu.css

780 ms

ja.moomenu.js

ja.moomenu.js

636 ms

blue.css

blue.css

840 ms

platform.js

platform.js

58 ms

script.js

script.js

858 ms

OHB_Strakate_usi_suseni_padousi_200.jpg

OHB_Strakate_usi_suseni_padousi_200.jpg

868 ms

evaknihaP.jpg

evaknihaP.jpg

919 ms

Ji%C5%99ina%20%20Markov%C3%A1%20Krystl%C3%ADkov%C3%A1%20-%20Tom%C3%A1%C5%A1%20Vod%C5%88ansk%C3%BD%20-.jpg

Ji%C5%99ina%20%20Markov%C3%A1%20Krystl%C3%ADkov%C3%A1%20-%20Tom%C3%A1%C5%A1%20Vod%C5%88ansk%C3%BD%20-.jpg

920 ms

cti_mi_Ach-jo-to-by-se-policistovi-stat-nemelo200.jpg

cti_mi_Ach-jo-to-by-se-policistovi-stat-nemelo200.jpg

998 ms

fok_Karneval%20zv%C3%AD%C5%99at200.jpg

fok_Karneval%20zv%C3%AD%C5%99at200.jpg

1057 ms

cert_a_kaca200.jpg

cert_a_kaca200.jpg

1065 ms

slunkoP.jpg

slunkoP.jpg

1077 ms

jak_se_zbavit_bolesti_zad200.jpg

jak_se_zbavit_bolesti_zad200.jpg

1077 ms

P%C3%A1te%C5%99-a-plot%C3%A9nky_soutez200.jpg

P%C3%A1te%C5%99-a-plot%C3%A9nky_soutez200.jpg

1080 ms

groove_brno200.jpg

groove_brno200.jpg

1222 ms

restorio_200.jpg

restorio_200.jpg

1471 ms

sarnathP.JPG

sarnathP.JPG

1470 ms

pause.png

pause.png

1580 ms

prev.png

prev.png

1471 ms

next.png

next.png

1580 ms

sdk.js

sdk.js

7 ms

120 ms

mod_jw_ucd.css

mod_jw_ucd.css

1415 ms

sdk.js

sdk.js

12 ms

webarchiv-certifikat-01.png

webarchiv-certifikat-01.png

309 ms

88x31.png

88x31.png

58 ms

moreP.jpg

moreP.jpg

1475 ms

gloria_200.jpg

gloria_200.jpg

1455 ms

VYSTAVA200.jpg

VYSTAVA200.jpg

1457 ms

88x31.png

88x31.png

57 ms

PVMD_200.jpg

PVMD_200.jpg

1331 ms

petr%20jakl200.jpg

petr%20jakl200.jpg

1256 ms

nemec%20foto%202.jpg

nemec%20foto%202.jpg

1278 ms

domecek_z_karet_200.jpg

domecek_z_karet_200.jpg

1710 ms

pece.jpg

pece.jpg

1516 ms

MEGALMAN_1.jpg

MEGALMAN_1.jpg

1629 ms

webarchiv-certifikat-01.png

webarchiv-certifikat-01.png

634 ms

image001.png

image001.png

1390 ms

livemarks.png

livemarks.png

1376 ms

eva_buresova200.jpg

eva_buresova200.jpg

1311 ms

brezen-mesic-ctenaru_200.jpg

brezen-mesic-ctenaru_200.jpg

1665 ms

hotylek.jpg

hotylek.jpg

1526 ms

banda_karty_jsou_rozdany200.jpg

banda_karty_jsou_rozdany200.jpg

1768 ms

1789_200.jpg

1789_200.jpg

1764 ms

Letime%202_200.jpg

Letime%202_200.jpg

1716 ms

analytics.js

analytics.js

15 ms

bullet.gif

bullet.gif

1494 ms

box-br.gif

box-br.gif

1520 ms

box-bl.gif

box-bl.gif

1639 ms

collect

collect

34 ms

box-tr.gif

box-tr.gif

1643 ms

box-tl.gif

box-tl.gif

1662 ms

videoseries

videoseries

299 ms

logo.jpg

logo.jpg

1651 ms

grad-2.gif

grad-2.gif

1620 ms

mainnav-sep.gif

mainnav-sep.gif

1561 ms

content-center.gif

content-center.gif

1665 ms

content-top.gif

content-top.gif

1704 ms

content-bot.gif

content-bot.gif

1729 ms

arrow2.png

arrow2.png

1732 ms

arrow2.png

arrow2.png

1612 ms

www-player.css

www-player.css

11 ms

www-embed-player.js

www-embed-player.js

29 ms

base.js

base.js

56 ms

ad_status.js

ad_status.js

207 ms

vline.gif

vline.gif

1363 ms

dd1.jpg

dd1.jpg

1478 ms

-IE9NVOjDHeKbguIKoMv97ZGvbdnRzECCJkBZGu5IKs.js

-IE9NVOjDHeKbguIKoMv97ZGvbdnRzECCJkBZGu5IKs.js

171 ms

embed.js

embed.js

96 ms

box-bg.gif

box-bg.gif

1422 ms

arrow.gif

arrow.gif

1448 ms

arrow.png

arrow.png

1423 ms

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z4JpjhjI4JetaTbD0hSy4T-b7WgSE1nyKGQcoXAGGzzu3QPjRnjYyxo229lEgaNIyOyk2mIwTQ=s68-c-k-c0x00ffffff-no-rj

201 ms

page.php

page.php

164 ms

readon-bg.gif

readon-bg.gif

1407 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

58 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

61 ms

box-r-br.gif

box-r-br.gif

1404 ms

box-r-bl.gif

box-r-bl.gif

1528 ms

box-r-tr.gif

box-r-tr.gif

1572 ms

box-r-tl.gif

box-r-tl.gif

1603 ms

id

id

43 ms

Create

Create

117 ms

pfs3shRYZOH.css

pfs3shRYZOH.css

18 ms

VWDhCULazb5.js

VWDhCULazb5.js

122 ms

o1ndYS2og_B.js

o1ndYS2og_B.js

182 ms

mP12tTiNgO_.js

mP12tTiNgO_.js

183 ms

5xOV5e9oy4e.js

5xOV5e9oy4e.js

185 ms

owo2sPJxB2z.js

owo2sPJxB2z.js

185 ms

p55HfXW__mM.js

p55HfXW__mM.js

184 ms

440901493_959364102855691_3675043892422927883_n.jpg

440901493_959364102855691_3675043892422927883_n.jpg

30 ms

331910362_781982143497665_6653624493061499291_n.png

331910362_781982143497665_6653624493061499291_n.png

26 ms

UXtr_j2Fwe-.png

UXtr_j2Fwe-.png

7 ms

GenerateIT

GenerateIT

21 ms

Accessibility Review

kultura21.cz accessibility score

59

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

kultura21.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

kultura21.cz SEO score

62

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 Kultura21.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 Kultura21.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

kultura21.cz

Open Graph data is detected on the main page of Kultura21. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: