Tools & Wizards About Us
ndm.cz screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    70% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 90% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

ndm.cz

Úvod | Národní divadlo moravskoslezské

Page Load Speed

5.7 sec in total

First Response

358 ms

Resources Loaded

4.9 sec

Page Rendered

496 ms

ndm.cz screenshot

About Website

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

NÁRODNÍ DIVADLO MORAVSKOSLEZSKÉ

Visit ndm.cz

Key Findings

We analyzed Ndm.cz page load time and found that the first response time was 358 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

ndm.cz performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value12.3 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.114

86/100

15%

TTI (Time to Interactive)

Value6.7 s

57/100

10%

Network Requests Diagram

ndm.cz

358 ms

1316 ms

style-new.css

136 ms

form.css

244 ms

jqueryslidemenu-1.css

265 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 97% of them (65 requests) were addressed to the original Ndm.cz, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Ndm.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 464.7 kB (30%)

Content Size

1.5 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ndm.cz main page is 1.5 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. 25% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 70.1 kB

  • Original 81.2 kB
  • After minification 62.4 kB
  • After compression 11.1 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. This page needs HTML code to be minified as it can gain 18.8 kB, which is 23% 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 70.1 kB or 86% of the original size.

Image Optimization

-13%

Potential reduce by 138.4 kB

  • Original 1.1 MB
  • After minification 945.9 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, Ndm needs image optimization as it can save up to 138.4 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 230.9 kB

  • Original 342.2 kB
  • After minification 330.1 kB
  • After compression 111.3 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 230.9 kB or 67% of the original size.

CSS Optimization

-81%

Potential reduce by 25.3 kB

  • Original 31.4 kB
  • After minification 21.0 kB
  • After compression 6.1 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. Ndm.cz needs all CSS files to be minified and compressed as it can save up to 25.3 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (26%)

Requests Now

65

After Optimization

48

  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ndm. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ndm.cz

ndm.cz

358 ms

1316 ms

style-new.css

style-new.css

136 ms

form.css

form.css

244 ms

jqueryslidemenu-1.css

jqueryslidemenu-1.css

265 ms

jqueryslidemenu-2.css

jqueryslidemenu-2.css

255 ms

jCapSlide.css

jCapSlide.css

249 ms

jcarousellite.css

jcarousellite.css

260 ms

style-footer.css

style-footer.css

255 ms

colorbox.css

colorbox.css

366 ms

share-buttons.css

share-buttons.css

369 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

509 ms

jquery-ui-1.8.2.custom.min.js

jquery-ui-1.8.2.custom.min.js

652 ms

jqueryslidemenu.js

jqueryslidemenu.js

381 ms

jquery.contentchange.js

jquery.contentchange.js

388 ms

jquery.capSlide.js

jquery.capSlide.js

481 ms

jcarousellite_1.0.1.pack.js

jcarousellite_1.0.1.pack.js

491 ms

config.main.page.js

config.main.page.js

524 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

523 ms

share-buttons.js

share-buttons.js

601 ms

facebook.jpg

facebook.jpg

139 ms

twitter.jpg

twitter.jpg

150 ms

youtube.jpg

youtube.jpg

265 ms

search.jpg

search.jpg

272 ms

newsletter.jpg

newsletter.jpg

142 ms

tripadvisor.png

tripadvisor.png

158 ms

ndm-logo-large2.png

ndm-logo-large2.png

288 ms

ndm-name.gif

ndm-name.gif

281 ms

czech_republic.png

czech_republic.png

293 ms

united_kingdom_great_britain.png

united_kingdom_great_britain.png

298 ms

box-hp.png

box-hp.png

387 ms

opera-hamletm-jpg-1433454064.jpg

opera-hamletm-jpg-1433454064.jpg

525 ms

ticket-icon.png

ticket-icon.png

399 ms

ku-pf-jpg-1337034858.jpg

ku-pf-jpg-1337034858.jpg

415 ms

chaplin-repre2-jpg-1448526967.jpg

chaplin-repre2-jpg-1448526967.jpg

562 ms

kolaz-edith-a-marlene-15cm-jpg-1387355443.jpg

kolaz-edith-a-marlene-15cm-jpg-1387355443.jpg

679 ms

icon-newsletter.png

icon-newsletter.png

522 ms

hp-article-division.png

hp-article-division.png

519 ms

bottom-vstupenky.gif

bottom-vstupenky.gif

567 ms

bottom-audio.gif

bottom-audio.gif

634 ms

bottom-program.gif

bottom-program.gif

642 ms

footer-bg.gif

footer-bg.gif

648 ms

footer-divadlo-1.jpg

footer-divadlo-1.jpg

707 ms

footer-divadlo-21.jpg

footer-divadlo-21.jpg

708 ms

footer-divadlo-31.jpg

footer-divadlo-31.jpg

884 ms

footer-divadlo-4.jpg

footer-divadlo-4.jpg

775 ms

footer-logo.gif

footer-logo.gif

771 ms

logo-ho-1372851198.jpg

logo-ho-1372851198.jpg

1141 ms

ndm-1377796495.jpg

ndm-1377796495.jpg

848 ms

arcelor-1376481716.png

arcelor-1376481716.png

843 ms

skupinacez-1450641385.jpg

skupinacez-1450641385.jpg

1256 ms

carousel_left.png

carousel_left.png

896 ms

foto-3-1426263070-png-1427967174.png

foto-3-1426263070-png-1427967174.png

1303 ms

labuti-jezero-kolotoc-jpg-1456122230.jpg

labuti-jezero-kolotoc-jpg-1456122230.jpg

1162 ms

rd-kolotoc-jpg-1450109198.jpg

rd-kolotoc-jpg-1450109198.jpg

1303 ms

analytics.js

analytics.js

27 ms

habadurakolo-jpg-1283509660.jpg

habadurakolo-jpg-1283509660.jpg

1249 ms

collect

collect

35 ms

image001-jpg-1448016794.jpg

image001-jpg-1448016794.jpg

1142 ms

snimek-obrazovky-2013-06-12-v-9-24-11-png-1371021995.png

snimek-obrazovky-2013-06-12-v-9-24-11-png-1371021995.png

1413 ms

moskva-petuski-kol-jpg-1301558861.jpg

moskva-petuski-kol-jpg-1301558861.jpg

1364 ms

evita-kolotoc-jpg-1398685915.jpg

evita-kolotoc-jpg-1398685915.jpg

1384 ms

image002-jpg-1448016750.jpg

image002-jpg-1448016750.jpg

1185 ms

chenier-kolotoc-jpg-1435131024.JPG

chenier-kolotoc-jpg-1435131024.JPG

1185 ms

carousel_right.png

carousel_right.png

1160 ms

down.gif

down.gif

1276 ms

overlay.png

overlay.png

1294 ms

Accessibility Review

ndm.cz accessibility score

96

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

Best Practices

ndm.cz best practices score

75

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

Missing source maps for large first-party JavaScript

SEO Factors

ndm.cz SEO score

92

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 Ndm.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 Ndm.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

ndm.cz

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