Tools & Wizards About Us
mrk.cz screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

mrk.cz

MRK.cz - Stále na rybách - ryby a rybaření

Page Load Speed

4.7 sec in total

First Response

318 ms

Resources Loaded

4 sec

Page Rendered

395 ms

mrk.cz screenshot

About Website

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

Ryby a rybaření, zpravodajství pro rybáře, aktuální informace od vody.

Visit mrk.cz

Key Findings

We analyzed Mrk.cz page load time and found that the first response time was 318 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

mrk.cz performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

33/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value980 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.073

96/100

15%

TTI (Time to Interactive)

Value12.2 s

16/100

10%

Network Requests Diagram

mrk.cz

318 ms

www.mrk.cz

855 ms

bootstrap.css

424 ms

bootstrap-select.css

315 ms

css

36 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 54% of them (37 requests) were addressed to the original Mrk.cz, 9% (6 requests) were made to Pagead2.googlesyndication.com and 7% (5 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Mrk.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 85.9 kB (8%)

Content Size

1.1 MB

After Optimization

969.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Mrk.cz main page is 1.1 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. 50% of websites need less resources to load. Javascripts take 532.0 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 69.5 kB

  • Original 88.4 kB
  • After minification 82.6 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. 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 69.5 kB or 79% of the original size.

Image Optimization

-2%

Potential reduce by 7.0 kB

  • Original 392.9 kB
  • After minification 385.9 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. MRK images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 5.6 kB

  • Original 532.0 kB
  • After minification 532.0 kB
  • After compression 526.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-9%

Potential reduce by 3.8 kB

  • Original 42.0 kB
  • After minification 42.0 kB
  • After compression 38.2 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. Mrk.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 29 (47%)

Requests Now

62

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of MRK. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

mrk.cz

mrk.cz

318 ms

www.mrk.cz

www.mrk.cz

855 ms

bootstrap.css

bootstrap.css

424 ms

bootstrap-select.css

bootstrap-select.css

315 ms

css

css

36 ms

jquery-2.2.4.min.js

jquery-2.2.4.min.js

24 ms

jquery.sidebar.js

jquery.sidebar.js

316 ms

adsbygoogle.js

adsbygoogle.js

104 ms

ssp.js

ssp.js

687 ms

jquery.mmenu.all.css

jquery.mmenu.all.css

316 ms

theme.css

theme.css

318 ms

book_lib22.js

book_lib22.js

416 ms

bootstrap.min.js

bootstrap.min.js

528 ms

bootstrap-select.js

bootstrap-select.js

536 ms

ie10-viewport-bug-workaround.js

ie10-viewport-bug-workaround.js

535 ms

jquery.mmenu.all.min.js

jquery.mmenu.all.min.js

535 ms

responsiveslides.min.js

responsiveslides.min.js

663 ms

jquery.lazy.min.js

jquery.lazy.min.js

663 ms

placeholder.min.js

placeholder.min.js

942 ms

foot.js

foot.js

950 ms

show_ads_impl.js

show_ads_impl.js

291 ms

analytics.js

analytics.js

70 ms

dot.asp

dot.asp

773 ms

logo-mrkcz.svg

logo-mrkcz.svg

336 ms

Mrk3l.jpeg

Mrk3l.jpeg

550 ms

56078_d3_nah.jpg

56078_d3_nah.jpg

550 ms

56079_d3_nah.jpg

56079_d3_nah.jpg

549 ms

56074_d3_nah.jpg

56074_d3_nah.jpg

772 ms

56069_d3_nah.jpg

56069_d3_nah.jpg

660 ms

56058_d3_nah.jpg

56058_d3_nah.jpg

773 ms

56056_d3_nah.jpg

56056_d3_nah.jpg

1026 ms

56057_d3_nah.jpg

56057_d3_nah.jpg

942 ms

g.gif

g.gif

942 ms

fboats004.jpg

fboats004.jpg

1281 ms

1702306_300_441df78e318f5fea16bc4ee34d83fbff.jpg

1702306_300_441df78e318f5fea16bc4ee34d83fbff.jpg

1047 ms

1632130_300_710ab993f8520a7451615a32a233512a.jpg

1632130_300_710ab993f8520a7451615a32a233512a.jpg

1240 ms

1610222_300_76ad89958caff07969d290ccef5ade9b.jpg

1610222_300_76ad89958caff07969d290ccef5ade9b.jpg

1241 ms

1711548_300_db7e55c8b28375d152a8f0d60732a17e.jpg

1711548_300_db7e55c8b28375d152a8f0d60732a17e.jpg

1344 ms

for-fishing.jpg

for-fishing.jpg

1339 ms

sumci-com-logo2.png

sumci-com-logo2.png

1360 ms

crs-logo.jpg

crs-logo.jpg

1554 ms

KFOmCnqEu92Fr1Mu7GxPKTU1Kg.ttf

KFOmCnqEu92Fr1Mu7GxPKTU1Kg.ttf

84 ms

KFOlCnqEu92Fr1MmWUlfChc9AMP6lQ.ttf

KFOlCnqEu92Fr1MmWUlfChc9AMP6lQ.ttf

85 ms

collect

collect

65 ms

collect

collect

98 ms

zrt_lookup.html

zrt_lookup.html

85 ms

ads

ads

212 ms

ads

ads

449 ms

js

js

82 ms

link-footer.svg

link-footer.svg

1376 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

1504 ms

ads

ads

463 ms

ads

ads

440 ms

ga-audiences

ga-audiences

416 ms

ajax_getad.php

ajax_getad.php

1315 ms

ca-pub-7632378486549934

ca-pub-7632378486549934

55 ms

slotcar_library.js

slotcar_library.js

86 ms

14763004658117789537

14763004658117789537

141 ms

load_preloaded_resource.js

load_preloaded_resource.js

140 ms

abg_lite.js

abg_lite.js

138 ms

window_focus.js

window_focus.js

137 ms

qs_click_protection.js

qs_click_protection.js

44 ms

ufs_web_display.js

ufs_web_display.js

42 ms

bbae3fd3506d8d9338f85d10ea9db8af.js

bbae3fd3506d8d9338f85d10ea9db8af.js

148 ms

css

css

25 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyzAFyo4d4k.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyzAFyo4d4k.ttf

5 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyzAFyo4d4k.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyzAFyo4d4k.ttf

9 ms

activeview

activeview

83 ms

FAz5UgRug7M8YaGFfFWxr9vetrg5Yv9xXEx-zc6kZAs.js

FAz5UgRug7M8YaGFfFWxr9vetrg5Yv9xXEx-zc6kZAs.js

3 ms

Accessibility Review

mrk.cz accessibility score

77

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 input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

Image elements do not have [alt] attributes

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

mrk.cz best practices score

75

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

mrk.cz SEO score

83

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

    ISO-8859-2

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mrk.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 Mrk.cz main page’s claimed encoding is iso-8859-2. 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

mrk.cz

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