Tools & Wizards About Us

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

museum.cz

MUSEUM.CZ - rozcestník mezi českými muzei, muzea v ČR

Page Load Speed

4.5 sec in total

First Response

373 ms

Resources Loaded

3.5 sec

Page Rendered

643 ms

About Website

Visit museum.cz now to see the best up-to-date MUSEUM content for Czech Republic and also check out these interesting facts you probably never knew about museum.cz

Museum.cz nabízí přehled a detailní informace o všech dostupných muzeích které se nacházají v České republice, dále aktuality z oblasti muzeí, informace a muzejních akcích, aktualizované fotografie mu...

Visit museum.cz

Key Findings

We analyzed Museum.cz page load time and found that the first response time was 373 ms and then it took 4.1 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

museum.cz performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value5.0 s

64/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.087

93/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

Network Requests Diagram

museum.cz

373 ms

www.museum.cz

800 ms

styles.css

762 ms

map.js

882 ms

cookieconsent.latest.min.js

30 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 62% of them (44 requests) were addressed to the original Museum.cz, 14% (10 requests) were made to Static.xx.fbcdn.net and 8% (6 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Museum.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 166.8 kB (21%)

Content Size

791.6 kB

After Optimization

624.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Museum.cz main page is 791.6 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. 50% of websites need less resources to load. Images take 669.9 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 25.7 kB

  • Original 33.9 kB
  • After minification 27.6 kB
  • After compression 8.3 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 6.3 kB, which is 19% 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 25.7 kB or 76% of the original size.

Image Optimization

-12%

Potential reduce by 83.0 kB

  • Original 669.9 kB
  • After minification 586.9 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, MUSEUM needs image optimization as it can save up to 83.0 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-62%

Potential reduce by 44.9 kB

  • Original 72.0 kB
  • After minification 71.2 kB
  • After compression 27.1 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 44.9 kB or 62% of the original size.

CSS Optimization

-84%

Potential reduce by 13.2 kB

  • Original 15.7 kB
  • After minification 11.2 kB
  • After compression 2.5 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. Museum.cz needs all CSS files to be minified and compressed as it can save up to 13.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (25%)

Requests Now

68

After Optimization

51

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of MUSEUM. 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 as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

museum.cz accessibility score

68

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

museum.cz best practices score

58

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

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

museum.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 Museum.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 Museum.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 MUSEUM. 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: