Tools & Wizards About Us
carollinum.cz screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

carollinum.cz

Luxury products of world brands | Carollinum.cz

Page Load Speed

4.6 sec in total

First Response

532 ms

Resources Loaded

3.5 sec

Page Rendered

608 ms

carollinum.cz screenshot

About Website

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

Luxury products of world brands

Visit carollinum.cz

Key Findings

We analyzed Carollinum.cz page load time and found that the first response time was 532 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

carollinum.cz performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value10.5 s

0/100

25%

SI (Speed Index)

Value13.7 s

1/100

10%

TBT (Total Blocking Time)

Value3,080 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.073

96/100

15%

TTI (Time to Interactive)

Value16.4 s

5/100

10%

Network Requests Diagram

carollinum.cz

532 ms

carollinum.cz

338 ms

www.carollinum.cz

614 ms

885 ms

uyr2rez.css

124 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 47% of them (20 requests) were addressed to the original Carollinum.cz, 19% (8 requests) were made to Use.typekit.net and 14% (6 requests) were made to Static.rolex.com. The less responsive or slowest element that took the longest time to load (960 ms) belongs to the original domain Carollinum.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 168.2 kB (28%)

Content Size

610.0 kB

After Optimization

441.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Carollinum.cz main page is 610.0 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. 55% of websites need less resources to load. Javascripts take 475.0 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 96.5 kB

  • Original 115.4 kB
  • After minification 81.3 kB
  • After compression 18.9 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 34.1 kB, which is 30% 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 96.5 kB or 84% of the original size.

Image Optimization

-16%

Potential reduce by 3.0 kB

  • Original 18.8 kB
  • After minification 15.8 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. Obviously, Carollinum needs image optimization as it can save up to 3.0 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-14%

Potential reduce by 68.6 kB

  • Original 475.0 kB
  • After minification 475.0 kB
  • After compression 406.4 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 68.6 kB or 14% of the original size.

CSS Optimization

-10%

Potential reduce by 83 B

  • Original 801 B
  • After minification 796 B
  • After compression 718 B

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. Carollinum.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 15 (48%)

Requests Now

31

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Carollinum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

carollinum.cz

carollinum.cz

532 ms

carollinum.cz

carollinum.cz

338 ms

www.carollinum.cz

www.carollinum.cz

614 ms

885 ms

uyr2rez.css

uyr2rez.css

124 ms

css

css

329 ms

api.js

api.js

32 ms

js

js

609 ms

react-bundle.js

react-bundle.js

960 ms

scripts

scripts

606 ms

p.css

p.css

19 ms

gtm.js

gtm.js

275 ms

fbevents.js

fbevents.js

209 ms

log.js

log.js

671 ms

c62ynct1u6

c62ynct1u6

319 ms

logo-header-200810.svg

logo-header-200810.svg

112 ms

pp-header-logo.png

pp-header-logo.png

235 ms

mastercard.svg

mastercard.svg

417 ms

maestro.svg

maestro.svg

419 ms

Visa.svg

Visa.svg

419 ms

mc_securecode.svg

mc_securecode.svg

421 ms

Verified_by_Visa.svg

Verified_by_Visa.svg

486 ms

600 ms

flag-cz.svg

flag-cz.svg

461 ms

flag-en.svg

flag-en.svg

463 ms

flag-ru.svg

flag-ru.svg

462 ms

flag-cn.svg

flag-cn.svg

464 ms

d

d

205 ms

d

d

205 ms

d

d

206 ms

icomoon.ttf

icomoon.ttf

622 ms

d

d

217 ms

d

d

304 ms

d

d

174 ms

recaptcha__en.js

recaptcha__en.js

153 ms

d

d

151 ms

clarity.js

clarity.js

236 ms

languages.js

languages.js

14 ms

clock.js

clock.js

18 ms

style.css

style.css

25 ms

logo_rolex.svg

logo_rolex.svg

20 ms

background_plaque.jpg

background_plaque.jpg

8 ms

www.carollinum.cz.js

www.carollinum.cz.js

83 ms

Accessibility Review

carollinum.cz accessibility score

93

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

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

High

Links do not have a discernible name

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

carollinum.cz best practices score

83

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

carollinum.cz 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

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 Carollinum.cz 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 Carollinum.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

carollinum.cz

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