Tools & Wizards About Us
cocky-optika.cz screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

cocky-optika.cz

Kontaktní čočky a roztoky levně - oční optika online

Page Load Speed

5.1 sec in total

First Response

453 ms

Resources Loaded

4.6 sec

Page Rendered

60 ms

cocky-optika.cz screenshot

About Website

Click here to check amazing Cocky Optika content for Czech Republic. Otherwise, check out these important facts you probably never knew about cocky-optika.cz

Kontaktní čočky levně. Oční čočky a roztoky na čočky u nás pořídíte levně a rychle. Výdejní místa kontaktních čoček po celé ČR.

Visit cocky-optika.cz

Key Findings

We analyzed Cocky-optika.cz page load time and found that the first response time was 453 ms and then it took 4.7 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

cocky-optika.cz performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

48/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value10.2 s

8/100

10%

TBT (Total Blocking Time)

Value1,600 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value13.4 s

11/100

10%

Network Requests Diagram

cocky-optika.cz

453 ms

www.cocky-optika.cz

1764 ms

styles-global.css

748 ms

styles-homepage.css

381 ms

styles-countries-fixes.css

287 ms

Our browser made a total of 115 requests to load all elements on the main page. We found that 89% of them (102 requests) were addressed to the original Cocky-optika.cz, 2% (2 requests) were made to Apis.google.com and 2% (2 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Cocky-optika.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (22%)

Content Size

4.6 MB

After Optimization

3.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cocky-optika.cz main page is 4.6 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. 60% of websites need less resources to load. Images take 3.1 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 379.4 kB

  • Original 419.7 kB
  • After minification 419.6 kB
  • After compression 40.3 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 379.4 kB or 90% of the original size.

Image Optimization

-6%

Potential reduce by 181.6 kB

  • Original 3.1 MB
  • After minification 3.0 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. Cocky Optika images are well optimized though.

JavaScript Optimization

-25%

Potential reduce by 187.5 kB

  • Original 747.6 kB
  • After minification 747.3 kB
  • After compression 560.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 187.5 kB or 25% of the original size.

CSS Optimization

-86%

Potential reduce by 286.4 kB

  • Original 333.4 kB
  • After minification 297.8 kB
  • After compression 47.1 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. Cocky-optika.cz needs all CSS files to be minified and compressed as it can save up to 286.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 45 (41%)

Requests Now

109

After Optimization

64

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 109 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cocky Optika. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 46 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cocky-optika.cz

cocky-optika.cz

453 ms

www.cocky-optika.cz

www.cocky-optika.cz

1764 ms

styles-global.css

styles-global.css

748 ms

styles-homepage.css

styles-homepage.css

381 ms

styles-countries-fixes.css

styles-countries-fixes.css

287 ms

platform.js

platform.js

20 ms

jquery.js

jquery.js

97 ms

jquery-fn-extend.js

jquery-fn-extend.js

96 ms

jquery-livequery.js

jquery-livequery.js

98 ms

jquery-nette.js

jquery-nette.js

190 ms

jquery-ajaxform.js

jquery-ajaxform.js

191 ms

jquery-cookie.js

jquery-cookie.js

192 ms

jquery-modal.js

jquery-modal.js

311 ms

popper.js

popper.js

376 ms

tippy.js

tippy.js

310 ms

tippy-options.js

tippy-options.js

311 ms

url-parameters.js

url-parameters.js

311 ms

swiper.js

swiper.js

384 ms

autocomplete.js

autocomplete.js

381 ms

jquery-scroll-to-top.js

jquery-scroll-to-top.js

382 ms

ResizeSensor.js

ResizeSensor.js

380 ms

sticky-sidebar.js

sticky-sidebar.js

382 ms

sticky-sidebar-options.js

sticky-sidebar-options.js

478 ms

common.js

common.js

479 ms

breadcrumbs-shrinker.js

breadcrumbs-shrinker.js

479 ms

detect-touch-device.js

detect-touch-device.js

480 ms

fixed-header.js

fixed-header.js

479 ms

backdrop.js

backdrop.js

480 ms

sidebar-menu.js

sidebar-menu.js

563 ms

swiper-banners.js

swiper-banners.js

568 ms

swiper-icons.js

swiper-icons.js

568 ms

swiper-hp-category-banner.js

swiper-hp-category-banner.js

570 ms

swiper-hp-brands.js

swiper-hp-brands.js

570 ms

swiper-hp-comments.js

swiper-hp-comments.js

570 ms

swiper-products-slider.js

swiper-products-slider.js

656 ms

custom.js

custom.js

661 ms

search-elastic-or-enterprise.js

search-elastic-or-enterprise.js

662 ms

search-autocomplete.js

search-autocomplete.js

663 ms

search.js

search.js

664 ms

cookie-trigger.js

cookie-trigger.js

663 ms

google-recaptcha.js

google-recaptcha.js

751 ms

gtm.js

gtm.js

147 ms

cocky-optika-cz-white.svg

cocky-optika-cz-white.svg

464 ms

cocky-optika-cz.svg

cocky-optika-cz.svg

466 ms

optika-voucher-promo-hp.png

optika-voucher-promo-hp.png

750 ms

gelone-natural-drops-promo-optika-hp.jpg

gelone-natural-drops-promo-optika-hp.jpg

747 ms

pc-glasses-mobile-optika.png

pc-glasses-mobile-optika.png

467 ms

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21231-400x300.jpg

554 ms

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544 ms

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637 ms

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545 ms

43580-400x300.jpg

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631 ms

api.js

api.js

37 ms

29381-400x300.jpg

29381-400x300.jpg

621 ms

recaptcha__en.js

recaptcha__en.js

24 ms

roboto-regular.woff

roboto-regular.woff

578 ms

roboto-medium.woff

roboto-medium.woff

659 ms

roboto-light.woff

roboto-light.woff

663 ms

roboto-bold.woff

roboto-bold.woff

665 ms

49992-400x300.jpg

49992-400x300.jpg

667 ms

29415-400x300.jpg

29415-400x300.jpg

752 ms

88656.js

88656.js

582 ms

29363-400x300.jpg

29363-400x300.jpg

656 ms

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667 ms

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657 ms

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663 ms

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665 ms

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749 ms

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667 ms

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665 ms

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668 ms

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673 ms

36737-400x300.jpg

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671 ms

56789-400x300.jpg

56789-400x300.jpg

764 ms

retargeting.js

retargeting.js

693 ms

52598-400x300.jpg

52598-400x300.jpg

677 ms

54607-400x300.jpg

54607-400x300.jpg

673 ms

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701 ms

52012-400x300.jpg

52012-400x300.jpg

674 ms

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700 ms

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766 ms

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679 ms

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680 ms

51937-400x300.jpg

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674 ms

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689 ms

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602 ms

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675 ms

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673 ms

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587 ms

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595 ms

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594 ms

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592 ms

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585 ms

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583 ms

82091-400x300.png

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674 ms

49249-400x300.png

49249-400x300.png

695 ms

89177-400x300.png

89177-400x300.png

592 ms

49618-400x300.png

49618-400x300.png

595 ms

cmp.php

cmp.php

412 ms

cmp_final.min.js

cmp_final.min.js

332 ms

10488-400x300.jpg

10488-400x300.jpg

587 ms

105-400x300.jpg

105-400x300.jpg

586 ms

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601 ms

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597 ms

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667 ms

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672 ms

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588 ms

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602 ms

260-400x300.jpg

260-400x300.jpg

694 ms

56555-400x300.png

56555-400x300.png

598 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

8 ms

badge

badge

137 ms

cmp.php

cmp.php

407 ms

no_rating.png

no_rating.png

5 ms

cmp.php

cmp.php

103 ms

Accessibility Review

cocky-optika.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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

cocky-optika.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

cocky-optika.cz SEO score

100

Search Engine Optimization Advices

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

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 Cocky-optika.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 Cocky-optika.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

cocky-optika.cz

Open Graph data is detected on the main page of Cocky Optika. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: