Tools & Wizards About Us
bio-colostrum.cz screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

bio-colostrum.cz

Health & Colostrum - nejširší nabídka doplňků stravy z colostra v ČR

Page Load Speed

3.7 sec in total

First Response

447 ms

Resources Loaded

3.1 sec

Page Rendered

145 ms

bio-colostrum.cz screenshot

About Website

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

Prémiové Bio Colostrum pro děti i dospělé z kontrolovaných farem v EU. Nabízíme přírodní doplňky stravy bez konzervačních látek a garancí původu. Tekuté bio colostrum a colostrum kapsle ve vysoké kval...

Visit bio-colostrum.cz

Key Findings

We analyzed Bio-colostrum.cz page load time and found that the first response time was 447 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

bio-colostrum.cz performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

21/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

bio-colostrum.cz

447 ms

www.bio-colostrum.cz

1207 ms

ecp_boxes.css

205 ms

format.css

306 ms

boxes.css

420 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 85% of them (45 requests) were addressed to the original Bio-colostrum.cz, 2% (1 request) were made to Google.com and 2% (1 request) were made to Login.dognet.sk. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Bio-colostrum.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 86.7 kB (10%)

Content Size

899.3 kB

After Optimization

812.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bio-colostrum.cz main page is 899.3 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. 45% of websites need less resources to load. Images take 473.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 27.2 kB

  • Original 34.3 kB
  • After minification 31.4 kB
  • After compression 7.1 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 27.2 kB or 79% of the original size.

Image Optimization

-7%

Potential reduce by 34.7 kB

  • Original 473.3 kB
  • After minification 438.6 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. Bio Colostrum images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 4.2 kB

  • Original 319.6 kB
  • After minification 319.6 kB
  • After compression 315.4 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

-29%

Potential reduce by 20.6 kB

  • Original 72.1 kB
  • After minification 72.1 kB
  • After compression 51.5 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. Bio-colostrum.cz needs all CSS files to be minified and compressed as it can save up to 20.6 kB or 29% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (48%)

Requests Now

48

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bio Colostrum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

bio-colostrum.cz

bio-colostrum.cz

447 ms

www.bio-colostrum.cz

www.bio-colostrum.cz

1207 ms

ecp_boxes.css

ecp_boxes.css

205 ms

format.css

format.css

306 ms

boxes.css

boxes.css

420 ms

modules.css

modules.css

410 ms

thickbox.css

thickbox.css

306 ms

asistent.css

asistent.css

309 ms

jquery.ui.css

jquery.ui.css

307 ms

lightbox.css

lightbox.css

405 ms

slider.css

slider.css

406 ms

list.css

list.css

416 ms

globals.js.php

globals.js.php

541 ms

header.js

header.js

505 ms

swfobject.js

swfobject.js

507 ms

api.js

api.js

43 ms

fj27g82d

fj27g82d

755 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

634 ms

js-set-e7ca664f7559054712b5d48b2adce789.js

js-set-e7ca664f7559054712b5d48b2adce789.js

733 ms

jquery.cookie.js

jquery.cookie.js

537 ms

custom.jquery.init.js

custom.jquery.init.js

632 ms

cookieconsent.min.js

cookieconsent.min.js

633 ms

gtm.js

gtm.js

77 ms

v2.zopim.com

v2.zopim.com

91 ms

recaptcha__en.js

recaptcha__en.js

38 ms

asset_composer.js

asset_composer.js

42 ms

print.css

print.css

144 ms

logo.png

logo.png

127 ms

search.png

search.png

128 ms

obrazek_149.png

obrazek_149.png

602 ms

obrazek_60.jpg

obrazek_60.jpg

303 ms

obrazek_61.jpg

obrazek_61.jpg

307 ms

obrazek_145.jpg

obrazek_145.jpg

376 ms

001_s.jpg

001_s.jpg

201 ms

002_s.jpg

002_s.jpg

202 ms

003_s.jpg

003_s.jpg

303 ms

009_s.jpg

009_s.jpg

304 ms

015_54f70e34306e6_s.jpg

015_54f70e34306e6_s.jpg

403 ms

004_s.jpg

004_s.jpg

404 ms

024_571f45520775e_s.jpg

024_571f45520775e_s.jpg

404 ms

008_s.jpg

008_s.jpg

405 ms

login_basket_small.png

login_basket_small.png

465 ms

compare_side.png

compare_side.png

490 ms

compare_text.png

compare_text.png

491 ms

5191.js

5191.js

102 ms

bestseller.png

bestseller.png

477 ms

loadingAnimationSlider.gif

loadingAnimationSlider.gif

481 ms

kulky.png

kulky.png

552 ms

ubuntu-m-webfont.woff

ubuntu-m-webfont.woff

564 ms

loadingAnimation.gif

loadingAnimation.gif

487 ms

sipky.png

sipky.png

488 ms

tooltip.png

tooltip.png

496 ms

dark-bottom.css

dark-bottom.css

33 ms

Accessibility Review

bio-colostrum.cz accessibility score

87

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

[role] values are not valid

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

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

Best Practices

bio-colostrum.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

bio-colostrum.cz SEO score

93

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

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 Bio-colostrum.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 Bio-colostrum.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

bio-colostrum.cz

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