Tools & Wizards About Us
itcluster.cz screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

itcluster.cz

IT Cluster - sdružení zaměřené na oblast IT technologií

Page Load Speed

4.3 sec in total

First Response

1.1 sec

Resources Loaded

2.8 sec

Page Rendered

429 ms

itcluster.cz screenshot

About Website

Visit itcluster.cz now to see the best up-to-date IT Cluster content and also check out these interesting facts you probably never knew about itcluster.cz

IT Cluster je sdružením podnikatelských subjektů a vzdělávacích institucí v oblasti informačních a komunikačních technologií (ICT).

Visit itcluster.cz

Key Findings

We analyzed Itcluster.cz page load time and found that the first response time was 1.1 sec and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

itcluster.cz performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value12.6 s

3/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.015

100/100

15%

TTI (Time to Interactive)

Value11.9 s

17/100

10%

Network Requests Diagram

itcluster.cz

1119 ms

jquery-ui.min.css

7 ms

bundle-732fc4c8bcbb62ef7f00e7fb59b70e1b.css

321 ms

css

40 ms

bundle-427aebb58f798c1e703ad50365b37f8a.css

217 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 79% of them (42 requests) were addressed to the original Itcluster.cz, 8% (4 requests) were made to Fonts.gstatic.com and 6% (3 requests) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Itcluster.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 77.4 kB (12%)

Content Size

624.5 kB

After Optimization

547.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Itcluster.cz main page is 624.5 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. 45% of websites need less resources to load. Images take 549.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 45.1 kB

  • Original 53.7 kB
  • After minification 36.1 kB
  • After compression 8.6 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 17.6 kB, which is 33% 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 45.1 kB or 84% of the original size.

Image Optimization

-6%

Potential reduce by 32.3 kB

  • Original 549.9 kB
  • After minification 517.6 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. IT Cluster images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

  • Original 21.0 kB
  • After minification 21.0 kB
  • After compression 20.9 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 6 (13%)

Requests Now

47

After Optimization

41

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IT Cluster. 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 JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

itcluster.cz

itcluster.cz

1119 ms

jquery-ui.min.css

jquery-ui.min.css

7 ms

bundle-732fc4c8bcbb62ef7f00e7fb59b70e1b.css

bundle-732fc4c8bcbb62ef7f00e7fb59b70e1b.css

321 ms

css

css

40 ms

bundle-427aebb58f798c1e703ad50365b37f8a.css

bundle-427aebb58f798c1e703ad50365b37f8a.css

217 ms

jquery.min.js

jquery.min.js

3 ms

jquery-ui.min.js

jquery-ui.min.js

6 ms

bundle-7880b520712792b661fcfda7a1a33ea6.js

bundle-7880b520712792b661fcfda7a1a33ea6.js

409 ms

analytics.js

analytics.js

174 ms

squared_metal.png

squared_metal.png

234 ms

logo.png

logo.png

414 ms

search_icon.png

search_icon.png

234 ms

login-button-blue.png

login-button-blue.png

236 ms

banner-eltodo.jpg

banner-eltodo.jpg

754 ms

banner-itcluster.jpg

banner-itcluster.jpg

648 ms

banner-kvados.jpg

banner-kvados.jpg

457 ms

banner-silne-pracoviste.png

banner-silne-pracoviste.png

634 ms

d3-itcluster-banner-big2.jpg

d3-itcluster-banner-big2.jpg

760 ms

logo_vitkoviceitsolution.png

logo_vitkoviceitsolution.png

443 ms

logo_kvados.png

logo_kvados.png

545 ms

logo_autocont.png

logo_autocont.png

557 ms

logo_polar.png

logo_polar.png

667 ms

logo_tieto.png

logo_tieto.png

681 ms

logo_k2.png

logo_k2.png

745 ms

logo_tmobile.png

logo_tmobile.png

758 ms

logo_storaenso.png

logo_storaenso.png

784 ms

logo_rpic_vip.png

logo_rpic_vip.png

811 ms

logo_sps_ostrava.png

logo_sps_ostrava.png

865 ms

logo_datamar.png

logo_datamar.png

885 ms

logo_azdpraha.png

logo_azdpraha.png

866 ms

logo_pegatron.png

logo_pegatron.png

876 ms

logo_d3soft.png

logo_d3soft.png

898 ms

logo_techniservit.png

logo_techniservit.png

984 ms

logo_ekf.png

logo_ekf.png

988 ms

logo_fei.png

logo_fei.png

991 ms

logo_kvados.png

logo_kvados.png

1003 ms

logo_vitkoviceitsolution.png

logo_vitkoviceitsolution.png

1011 ms

logo_ilab_rfid.png

logo_ilab_rfid.png

1041 ms

logo_sgi.png

logo_sgi.png

1124 ms

logo_sdruzeniprorozvojmsk.png

logo_sdruzeniprorozvojmsk.png

1125 ms

logo_eltodo.png

logo_eltodo.png

1135 ms

cluster_label_bronze2013.png

cluster_label_bronze2013.png

1146 ms

eu-funds.png

eu-funds.png

1030 ms

opvk-logolink.png

opvk-logolink.png

954 ms

nestigo-logo-footer-blue.png

nestigo-logo-footer-blue.png

1032 ms

5M21SdFLkD52QavfmHs6cA.ttf

5M21SdFLkD52QavfmHs6cA.ttf

175 ms

oOeFwZNlrTefzLYmlVV1UKCWcynf_cDxXwCLxiixG1c.ttf

oOeFwZNlrTefzLYmlVV1UKCWcynf_cDxXwCLxiixG1c.ttf

176 ms

Pru33qjShpZSmG3z6VYwnaCWcynf_cDxXwCLxiixG1c.ttf

Pru33qjShpZSmG3z6VYwnaCWcynf_cDxXwCLxiixG1c.ttf

177 ms

97uahxiqZRoncBaCEI3aW6CWcynf_cDxXwCLxiixG1c.ttf

97uahxiqZRoncBaCEI3aW6CWcynf_cDxXwCLxiixG1c.ttf

176 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

1150 ms

collect

collect

147 ms

collect

collect

185 ms

loading.gif

loading.gif

880 ms

Accessibility Review

itcluster.cz accessibility score

87

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

itcluster.cz best practices score

83

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

Page has valid source maps

SEO Factors

itcluster.cz SEO score

93

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

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

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 Itcluster.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 Itcluster.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

itcluster.cz

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