Tools & Wizards About Us
predtanceni.info screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 84

    SEO

    Google-friendlier than
    53% of websites

predtanceni.info

Předtančení na ples | Taneční vystoupení a show mistrů ČR

Page Load Speed

4.3 sec in total

First Response

468 ms

Resources Loaded

2.7 sec

Page Rendered

1.1 sec

predtanceni.info screenshot

About Website

Welcome to predtanceni.info homepage info - get ready to check Predtanceni best content right away, or after learning these important things about predtanceni.info

Organizujte ples či firemní party? Poptáváte celovečerní program na úrovni? Nabízíme taneční vystoupení párů, formace: latinsko-americké & standardní tance.

Visit predtanceni.info

Key Findings

We analyzed Predtanceni.info page load time and found that the first response time was 468 ms and then it took 3.9 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

predtanceni.info performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

48/100

10%

LCP (Largest Contentful Paint)

Value7.5 s

4/100

25%

SI (Speed Index)

Value12.9 s

2/100

10%

TBT (Total Blocking Time)

Value2,850 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value1.022

2/100

15%

TTI (Time to Interactive)

Value11.9 s

16/100

10%

Network Requests Diagram

predtanceni.info

468 ms

global.css

120 ms

predtanceni.css

238 ms

dfx_essentials.js

243 ms

main0001.js

239 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 77% of them (44 requests) were addressed to the original Predtanceni.info, 7% (4 requests) were made to Youtube.com and 5% (3 requests) were made to S.ytimg.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Predtanceni.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 628.8 kB (44%)

Content Size

1.4 MB

After Optimization

814.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Predtanceni.info main page is 1.4 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. 65% of websites need less resources to load. Images take 617.1 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 16.0 kB

  • Original 22.1 kB
  • After minification 20.0 kB
  • After compression 6.1 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 16.0 kB or 72% of the original size.

Image Optimization

-3%

Potential reduce by 19.3 kB

  • Original 617.1 kB
  • After minification 597.8 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. Predtanceni images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 353.4 kB

  • Original 517.0 kB
  • After minification 482.7 kB
  • After compression 163.5 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 353.4 kB or 68% of the original size.

CSS Optimization

-84%

Potential reduce by 240.1 kB

  • Original 287.4 kB
  • After minification 269.9 kB
  • After compression 47.3 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. Predtanceni.info needs all CSS files to be minified and compressed as it can save up to 240.1 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (22%)

Requests Now

50

After Optimization

39

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Predtanceni. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

predtanceni.info

predtanceni.info

468 ms

global.css

global.css

120 ms

predtanceni.css

predtanceni.css

238 ms

dfx_essentials.js

dfx_essentials.js

243 ms

main0001.js

main0001.js

239 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

414 ms

jquery-ui-1.8.22.min.js

jquery-ui-1.8.22.min.js

237 ms

galleria-1.2.7.min.js

galleria-1.2.7.min.js

383 ms

dfx_functions.js

dfx_functions.js

134 ms

vizual.jpg

vizual.jpg

760 ms

color-bg-0.jpg

color-bg-0.jpg

391 ms

clocks.png

clocks.png

391 ms

youtube-shdw.png

youtube-shdw.png

130 ms

gfx-arrows.png

gfx-arrows.png

130 ms

color-bg-1.jpg

color-bg-1.jpg

732 ms

color-bg-1a.jpg

color-bg-1a.jpg

733 ms

color-bg-2.jpg

color-bg-2.jpg

391 ms

color-bg-3.jpg

color-bg-3.jpg

722 ms

gfx-photo-bg.png

gfx-photo-bg.png

722 ms

01.jpg

01.jpg

723 ms

02.jpg

02.jpg

732 ms

03.jpg

03.jpg

730 ms

color-bg-4.jpg

color-bg-4.jpg

733 ms

01.jpg

01.jpg

732 ms

02.jpg

02.jpg

754 ms

03.jpg

03.jpg

754 ms

04.jpg

04.jpg

769 ms

bg-di-line.png

bg-di-line.png

752 ms

block-6-bg.jpg

block-6-bg.jpg

1627 ms

bg-footer-red.jpg

bg-footer-red.jpg

935 ms

top-icons.png

top-icons.png

949 ms

bg-arrows.png

bg-arrows.png

935 ms

gfx-ftbg-card.png

gfx-ftbg-card.png

948 ms

logo-lache.png

logo-lache.png

949 ms

logo-magda.png

logo-magda.png

1003 ms

logo-dfx.png

logo-dfx.png

1003 ms

logo-w.png

logo-w.png

1005 ms

gfx-btn-up.png

gfx-btn-up.png

1004 ms

logo-b.png

logo-b.png

1004 ms

kFFrkSoiGz4

kFFrkSoiGz4

134 ms

CVi64bJcC08

CVi64bJcC08

69 ms

Y4KnNba0OS0

Y4KnNba0OS0

102 ms

ObfcCmcMlqU

ObfcCmcMlqU

101 ms

analytics.js

analytics.js

19 ms

24F976_0_0.woff

24F976_0_0.woff

1121 ms

24F976_1_0.woff

24F976_1_0.woff

1149 ms

24F976_3_0.woff

24F976_3_0.woff

1150 ms

24F976_2_0.woff

24F976_2_0.woff

1269 ms

collect

collect

13 ms

www-embed-player-vflfNyN_r.css

www-embed-player-vflfNyN_r.css

100 ms

www-embed-player.js

www-embed-player.js

137 ms

base.js

base.js

207 ms

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

161 ms

ad_status.js

ad_status.js

158 ms

zN7GBFwfMP4uA6AR0HCoLQ.ttf

zN7GBFwfMP4uA6AR0HCoLQ.ttf

134 ms

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

134 ms

galleria.classic.min.js

galleria.classic.min.js

116 ms

Accessibility Review

predtanceni.info accessibility score

79

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

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

Links do not have a discernible name

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

predtanceni.info best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

predtanceni.info SEO score

84

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

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

High

Tap targets are not sized appropriately

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 Predtanceni.info 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 Predtanceni.info 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

predtanceni.info

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