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duelsoft.cz screenshot

Report Summary

  • 95

    Performance

    Renders faster than
    93% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

duelsoft.cz

Page Load Speed

2.3 sec in total

First Response

365 ms

Resources Loaded

1.8 sec

Page Rendered

147 ms

duelsoft.cz screenshot

About Website

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

informační systémy, tvorba software na zákazku, webové aplikace, tvorba WWW stránek, tvorba webu, sms aplikace, jukebox.

Visit duelsoft.cz

Key Findings

We analyzed Duelsoft.cz page load time and found that the first response time was 365 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 40% of websites can load faster.

Performance Metrics

duelsoft.cz performance score

95

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

98/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.029

100/100

15%

TTI (Time to Interactive)

Value1.4 s

100/100

10%

Network Requests Diagram

duelsoft.cz

365 ms

www.duelsoft.cz

657 ms

main.css

189 ms

code

354 ms

hlavicka.jpg

254 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 80% of them (8 requests) were addressed to the original Duelsoft.cz, 20% (2 requests) were made to C1.navrcholu.cz. The less responsive or slowest element that took the longest time to load (657 ms) belongs to the original domain Duelsoft.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 32.2 kB (22%)

Content Size

143.3 kB

After Optimization

111.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Duelsoft.cz main page is 143.3 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. Only 10% of websites need less resources to load. Images take 115.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 8.6 kB

  • Original 11.3 kB
  • After minification 7.9 kB
  • After compression 2.7 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 3.5 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 8.6 kB or 76% of the original size.

Image Optimization

-9%

Potential reduce by 10.3 kB

  • Original 115.5 kB
  • After minification 105.2 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. Duelsoft images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 804 B

  • Original 1.6 kB
  • After minification 1.5 kB
  • After compression 808 B

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 804 B or 50% of the original size.

CSS Optimization

-85%

Potential reduce by 12.5 kB

  • Original 14.8 kB
  • After minification 8.3 kB
  • After compression 2.3 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. Duelsoft.cz needs all CSS files to be minified and compressed as it can save up to 12.5 kB or 85% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duelsoft. According to our analytics all requests are already optimized.

Network Requests Diagram

duelsoft.cz

duelsoft.cz

365 ms

www.duelsoft.cz

www.duelsoft.cz

657 ms

main.css

main.css

189 ms

code

code

354 ms

hlavicka.jpg

hlavicka.jpg

254 ms

hor-menu-bground.gif

hor-menu-bground.gif

262 ms

kancelar.jpg

kancelar.jpg

588 ms

flat.gif

flat.gif

390 ms

menu-title.jpg

menu-title.jpg

286 ms

hit

hit

249 ms

Accessibility Review

duelsoft.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.

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

Links do not have a discernible name

Best Practices

duelsoft.cz best practices score

75

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

SEO Factors

duelsoft.cz SEO score

77

Search Engine Optimization Advices

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 Duelsoft.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 Duelsoft.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

duelsoft.cz

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