Report Summary

  • 64

    Performance

    Renders faster than
    79% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 93% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

nuov.cz

Národní ústav odborného vzdělávání

Page Load Speed

5.3 sec in total

First Response

951 ms

Resources Loaded

4.1 sec

Page Rendered

240 ms

nuov.cz screenshot

About Website

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

Stránky Národního ústavu pro odborného vzdělávání

Visit nuov.cz

Key Findings

We analyzed Nuov.cz page load time and found that the first response time was 951 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

nuov.cz performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

24/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.056

98/100

15%

TTI (Time to Interactive)

Value5.3 s

73/100

10%

Network Requests Diagram

nuov.cz

951 ms

ga.js

7 ms

main.css

660 ms

inline.css

435 ms

minmax.js

447 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 96% of them (49 requests) were addressed to the original Nuov.cz, 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Nuov.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 276.2 kB (54%)

Content Size

511.2 kB

After Optimization

235.0 kB

In fact, the total size of Nuov.cz main page is 511.2 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. 20% of websites need less resources to load. Javascripts take 288.1 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 12.6 kB

  • Original 17.4 kB
  • After minification 17.2 kB
  • After compression 4.8 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 12.6 kB or 72% of the original size.

Image Optimization

-14%

Potential reduce by 21.2 kB

  • Original 154.5 kB
  • After minification 133.3 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, Nuov needs image optimization as it can save up to 21.2 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 200.4 kB

  • Original 288.1 kB
  • After minification 253.1 kB
  • After compression 87.7 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 200.4 kB or 70% of the original size.

CSS Optimization

-82%

Potential reduce by 41.9 kB

  • Original 51.2 kB
  • After minification 37.4 kB
  • After compression 9.2 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. Nuov.cz needs all CSS files to be minified and compressed as it can save up to 41.9 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (60%)

Requests Now

50

After Optimization

20

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nuov. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

nuov.cz accessibility score

97

Accessibility Issues

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

nuov.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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

nuov.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 Nuov.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 Nuov.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

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