Tools & Wizards About Us
clsc.cz screenshot

Report Summary

  • 60

    Performance

    Renders faster than
    75% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

clsc.cz

Czech Limousine Service Company | Dopravní služby luxusními vozy pro firmy, hotely, ambasády, filmové a divadelní agentury, jednotlivce a cestovní kan...

Page Load Speed

3.5 sec in total

First Response

519 ms

Resources Loaded

2.8 sec

Page Rendered

181 ms

clsc.cz screenshot

About Website

Visit clsc.cz now to see the best up-to-date Clsc content and also check out these interesting facts you probably never knew about clsc.cz

CZECH LIMOUSINE was established to provide high level transportation services for demanding clients. We provide you with cost-effective, complete, fast and ...

Visit clsc.cz

Key Findings

We analyzed Clsc.cz page load time and found that the first response time was 519 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

clsc.cz performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value5.5 s

54/100

10%

TBT (Total Blocking Time)

Value190 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

Network Requests Diagram

www.clsc.cz

519 ms

jquery-1.7.1.min.js

202 ms

jquery.nivo.slider.pack.js

197 ms

colorbox1.js

197 ms

colorbox2.js

197 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 97% of them (66 requests) were addressed to the original Clsc.cz, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (988 ms) belongs to the original domain Clsc.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.1 kB (2%)

Content Size

1.5 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Clsc.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. 45% of websites need less resources to load. Images take 1.4 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 15.7 kB

  • Original 21.0 kB
  • After minification 20.9 kB
  • After compression 5.3 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. 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 15.7 kB or 75% of the original size.

Image Optimization

-1%

Potential reduce by 12.3 kB

  • Original 1.4 MB
  • After minification 1.4 MB

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. Clsc images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 563 B

  • Original 58.7 kB
  • After minification 58.7 kB
  • After compression 58.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-23%

Potential reduce by 1.6 kB

  • Original 6.7 kB
  • After minification 6.7 kB
  • After compression 5.1 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. Clsc.cz needs all CSS files to be minified and compressed as it can save up to 1.6 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (42%)

Requests Now

67

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Clsc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.clsc.cz

www.clsc.cz

519 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

202 ms

jquery.nivo.slider.pack.js

jquery.nivo.slider.pack.js

197 ms

colorbox1.js

colorbox1.js

197 ms

colorbox2.js

colorbox2.js

197 ms

theme.js

theme.js

198 ms

template.css

template.css

211 ms

colorbox.css

colorbox.css

299 ms

nivoslider.css

nivoslider.css

299 ms

ga.js

ga.js

48 ms

bg_home.jpg

bg_home.jpg

291 ms

menu-lista.png

menu-lista.png

104 ms

logo.png

logo.png

108 ms

menu-bg.jpg

menu-bg.jpg

105 ms

menu_sep.png

menu_sep.png

105 ms

hover.png

hover.png

103 ms

header_home.png

header_home.png

298 ms

slogan.png

slogan.png

208 ms

phone.png

phone.png

207 ms

sep.gif

sep.gif

209 ms

03.jpg

03.jpg

513 ms

04.jpg

04.jpg

592 ms

02.jpg

02.jpg

589 ms

05.jpg

05.jpg

685 ms

06.jpg

06.jpg

488 ms

07.jpg

07.jpg

586 ms

image-514x400.jpg

image-514x400.jpg

593 ms

li.gif

li.gif

616 ms

cc-visa-electron.png

cc-visa-electron.png

689 ms

cc-visa.png

cc-visa.png

690 ms

cc-maestro-electronic.png

cc-maestro-electronic.png

695 ms

cc-mastercard.png

cc-mastercard.png

696 ms

cc-maestro.png

cc-maestro.png

722 ms

cc-dinersclub.png

cc-dinersclub.png

787 ms

cc-vpay.png

cc-vpay.png

790 ms

cc-american-express.png

cc-american-express.png

794 ms

ol_li.png

ol_li.png

797 ms

shaddow.png

shaddow.png

794 ms

rozcestnik.png

rozcestnik.png

830 ms

04a.jpg

04a.jpg

887 ms

05a.jpg

05a.jpg

892 ms

02a.jpg

02a.jpg

895 ms

03a.jpg

03a.jpg

892 ms

01a.jpg

01a.jpg

898 ms

footer.jpg

footer.jpg

935 ms

fb.jpg

fb.jpg

988 ms

__utm.gif

__utm.gif

14 ms

l-cr.png

l-cr.png

893 ms

l-ccb.png

l-ccb.png

893 ms

auto.png

auto.png

894 ms

h1.jpg

h1.jpg

898 ms

border.png

border.png

939 ms

controls.png

controls.png

881 ms

ico-arrow.png

ico-arrow.png

886 ms

flags.png

flags.png

890 ms

ol_li2.png

ol_li2.png

810 ms

ol_li3.png

ol_li3.png

807 ms

ol_li4.png

ol_li4.png

662 ms

04b.jpg

04b.jpg

679 ms

05b.jpg

05b.jpg

609 ms

02b.jpg

02b.jpg

608 ms

03b.jpg

03b.jpg

610 ms

01b.jpg

01b.jpg

614 ms

print.css

print.css

103 ms

bg80.png

bg80.png

102 ms

slideshow_li.gif

slideshow_li.gif

101 ms

button.png

button.png

109 ms

bullets.png

bullets.png

103 ms

Accessibility Review

clsc.cz accessibility score

79

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

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

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

clsc.cz best practices score

67

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

SEO Factors

clsc.cz SEO score

71

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Clsc.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed Czech language. Our system also found out that Clsc.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

clsc.cz

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