Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

carollinum.cz

Carollinum | Luxusní produkty světových značek

Page Load Speed

4.7 sec in total

First Response

351 ms

Resources Loaded

4.2 sec

Page Rendered

202 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

Společnost Carollinum se specializuje na prodej luxusních produktů, zahrnujících především hodinky, šperky, psací potřeby, kožené doplňky, dámskou i pánskou módu a další.

Visit carollinum.cz

Key Findings

We analyzed Carollinum.cz page load time and found that the first response time was 351 ms and then it took 4.4 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

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value19.0 s

0/100

25%

SI (Speed Index)

Value10.2 s

8/100

10%

TBT (Total Blocking Time)

Value1,050 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.103

89/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

Network Requests Diagram

carollinum.cz

351 ms

793 ms

modernizr-2.6.2.min.js

733 ms

biy8npr.js

265 ms

jquery.min.js

8 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 36% of them (15 requests) were addressed to the original Carollinum.cz, 7% (3 requests) were made to Facebook.com and 7% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Carollinum.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 341.8 kB (52%)

Content Size

658.3 kB

After Optimization

316.5 kB

In fact, the total size of Carollinum.cz main page is 658.3 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 331.3 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 27.6 kB

  • Original 37.1 kB
  • After minification 32.0 kB
  • After compression 9.5 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 5.1 kB, which is 14% 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 27.6 kB or 74% of the original size.

Image Optimization

-4%

Potential reduce by 8.6 kB

  • Original 217.9 kB
  • After minification 209.3 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. Carollinum images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 245.0 kB

  • Original 331.3 kB
  • After minification 304.5 kB
  • After compression 86.3 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 245.0 kB or 74% of the original size.

CSS Optimization

-84%

Potential reduce by 60.6 kB

  • Original 72.0 kB
  • After minification 71.4 kB
  • After compression 11.4 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. Carollinum.cz needs all CSS files to be minified and compressed as it can save up to 60.6 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (56%)

Requests Now

36

After Optimization

16

The browser has sent 36 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 16 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

carollinum.cz accessibility score

85

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-hidden="true"] elements contain focusable descendents

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

Image elements do not have [alt] attributes

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

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

carollinum.cz SEO score

75

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

    CS

  • 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 it matches the claimed language. 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

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: