Tools & Wizards About Us
jako.cz screenshot

Report Summary

  • 0

    Performance

  • 33

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

jako.cz

Jako, s.r.o.

Page Load Speed

22 sec in total

First Response

353 ms

Resources Loaded

21.5 sec

Page Rendered

123 ms

jako.cz screenshot

About Website

Welcome to jako.cz homepage info - get ready to check Jako best content right away, or after learning these important things about jako.cz

Str?nky firmy Jako, s.r.o.

Visit jako.cz

Key Findings

We analyzed Jako.cz page load time and found that the first response time was 353 ms and then it took 21.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

jako.cz performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

Network Requests Diagram

jako.cz

353 ms

logo.htm

115 ms

nadpis.htm

204 ms

navigace.htm

218 ms

uvod.htm

227 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 60% of them (24 requests) were addressed to the original Jako.cz, 35% (14 requests) were made to Ikony.czechtrade.net and 3% (1 request) were made to Emonitor.cz. The less responsive or slowest element that took the longest time to load (20.4 sec) relates to the external source Toplist.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.7 kB (44%)

Content Size

3.9 kB

After Optimization

2.2 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Jako.cz main page is 3.9 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. Only 5% of websites need less resources to load. Images take 1.9 kB which makes up the majority of the site volume.

HTML Optimization

-59%

Potential reduce by 1.1 kB

  • Original 1.8 kB
  • After minification 1.8 kB
  • After compression 747 B

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 1.1 kB or 59% of the original size.

Image Optimization

-32%

Potential reduce by 595 B

  • Original 1.9 kB
  • After minification 1.3 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, Jako needs image optimization as it can save up to 595 B or 32% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-27%

Potential reduce by 57 B

  • Original 213 B
  • After minification 213 B
  • After compression 156 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. Jako.cz needs all CSS files to be minified and compressed as it can save up to 57 B or 27% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (73%)

Requests Now

30

After Optimization

8

  • AJAX
  • Images
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jako. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

jako.cz

jako.cz

353 ms

logo.htm

logo.htm

115 ms

nadpis.htm

nadpis.htm

204 ms

navigace.htm

navigace.htm

218 ms

uvod.htm

uvod.htm

227 ms

pozadi.jpg

pozadi.jpg

115 ms

jklogo.gif

jklogo.gif

189 ms

jako.css

jako.css

116 ms

jakologo.gif

jakologo.gif

136 ms

uvodnistranka.gif

uvodnistranka.gif

121 ms

cernalinka2.gif

cernalinka2.gif

124 ms

homepage.gif

homepage.gif

183 ms

kdojsme.gif

kdojsme.gif

186 ms

whoweare.gif

whoweare.gif

202 ms

novinky.gif

novinky.gif

217 ms

news.gif

news.gif

225 ms

email1.gif

email1.gif

240 ms

chemlogo.gif

chemlogo.gif

284 ms

aktivniuhli.gif

aktivniuhli.gif

287 ms

activatedcarbon.gif

activatedcarbon.gif

302 ms

uvdezinfekce.gif

uvdezinfekce.gif

324 ms

uvdisinfection.gif

uvdisinfection.gif

333 ms

6-cze.gif

6-cze.gif

356 ms

stat-25070860.js

stat-25070860.js

183 ms

ceskavlajka1.gif

ceskavlajka1.gif

348 ms

usvlajka1.gif

usvlajka1.gif

377 ms

6-eng.gif

6-eng.gif

363 ms

6-ger.gif

6-ger.gif

367 ms

6-rus.gif

6-rus.gif

371 ms

6-fra.gif

6-fra.gif

372 ms

6-esp.gif

6-esp.gif

373 ms

6-ita.gif

6-ita.gif

454 ms

6-cze.gif

6-cze.gif

438 ms

6-eng.gif

6-eng.gif

452 ms

6-ger.gif

6-ger.gif

448 ms

6-rus.gif

6-rus.gif

443 ms

6-fra.gif

6-fra.gif

453 ms

6-esp.gif

6-esp.gif

456 ms

6-ita.gif

6-ita.gif

444 ms

count.asp

count.asp

20442 ms

Accessibility Review

jako.cz accessibility score

33

Accessibility Issues

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

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

jako.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

SEO Factors

jako.cz SEO score

73

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jako.cz can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Jako.cz main page’s claimed encoding is windows-1250. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

jako.cz

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