Tools & Wizards About Us
biosdobris.cz screenshot

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

biosdobris.cz

BIOS s.r.o. Dřevěné střešní konstrukce, vazníky, krovy, střechy na klíč - BIOS s.r.o.

Page Load Speed

3.1 sec in total

First Response

358 ms

Resources Loaded

2.4 sec

Page Rendered

312 ms

biosdobris.cz screenshot

About Website

Visit biosdobris.cz now to see the best up-to-date BIOS Dobris content for Czech Republic and also check out these interesting facts you probably never knew about biosdobris.cz

Nejstarší výrobce dřevěných příhradových vazníků ve východní Evropě - výroba od r. 1970. Styčníkové vazníky, krovy, střechy na klíč. Tradice, kvalita, zkušenost.

Visit biosdobris.cz

Key Findings

We analyzed Biosdobris.cz page load time and found that the first response time was 358 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

biosdobris.cz performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value9.7 s

10/100

10%

TBT (Total Blocking Time)

Value3,880 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.496

16/100

15%

TTI (Time to Interactive)

Value11.4 s

19/100

10%

Network Requests Diagram

biosdobris.cz

358 ms

www.biosdobris.cz

384 ms

styl.css

236 ms

jquery-latest.js

337 ms

thickbox.js

230 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 90% of them (45 requests) were addressed to the original Biosdobris.cz, 4% (2 requests) were made to C.imedia.cz and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (929 ms) belongs to the original domain Biosdobris.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 138.1 kB (18%)

Content Size

772.8 kB

After Optimization

634.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Biosdobris.cz main page is 772.8 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. 35% of websites need less resources to load. Images take 589.2 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 16.0 kB

  • Original 20.9 kB
  • After minification 18.5 kB
  • After compression 4.8 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. This page needs HTML code to be minified as it can gain 2.4 kB, which is 11% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 16.0 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 19.7 kB

  • Original 589.2 kB
  • After minification 569.5 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. BIOS Dobris images are well optimized though.

JavaScript Optimization

-52%

Potential reduce by 55.0 kB

  • Original 106.5 kB
  • After minification 104.5 kB
  • After compression 51.5 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 55.0 kB or 52% of the original size.

CSS Optimization

-84%

Potential reduce by 47.3 kB

  • Original 56.2 kB
  • After minification 41.2 kB
  • After compression 8.9 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. Biosdobris.cz needs all CSS files to be minified and compressed as it can save up to 47.3 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (40%)

Requests Now

48

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BIOS Dobris. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

biosdobris.cz

biosdobris.cz

358 ms

www.biosdobris.cz

www.biosdobris.cz

384 ms

styl.css

styl.css

236 ms

jquery-latest.js

jquery-latest.js

337 ms

thickbox.js

thickbox.js

230 ms

thickbox.css

thickbox.css

243 ms

add.css

add.css

243 ms

lightbox.css

lightbox.css

242 ms

jquery.js

jquery.js

573 ms

carousel.js

carousel.js

352 ms

mdcr.js

mdcr.js

355 ms

ga-set.js

ga-set.js

353 ms

retargeting.js

retargeting.js

202 ms

cech1.png

cech1.png

125 ms

ISO9001_en_c.png

ISO9001_en_c.png

116 ms

profil-c-foto.jpg

profil-c-foto.jpg

122 ms

discount-0.png

discount-0.png

120 ms

late2.png

late2.png

227 ms

late-2.png

late-2.png

238 ms

rhombus.png

rhombus.png

231 ms

brikety-RUF.jpg

brikety-RUF.jpg

237 ms

vazniky.jpg

vazniky.jpg

239 ms

poukaz.png

poukaz.png

356 ms

drevo.png

drevo.png

447 ms

img-direct-contact.jpg

img-direct-contact.jpg

345 ms

gtm.js

gtm.js

73 ms

logo2.png

logo2.png

344 ms

button-find.gif

button-find.gif

345 ms

shopping-box2.jpg

shopping-box2.jpg

346 ms

bg-carousel.jpg

bg-carousel.jpg

565 ms

main-menu-item.jpg

main-menu-item.jpg

461 ms

img-vazniky.png

img-vazniky.png

929 ms

bg-banner-contact.jpg

bg-banner-contact.jpg

462 ms

list-item-01a.gif

list-item-01a.gif

462 ms

info-ico.gif

info-ico.gif

547 ms

bg-line-yellow.jpg

bg-line-yellow.jpg

577 ms

left-menu-item-01.jpg

left-menu-item-01.jpg

580 ms

left-menu-item-02.jpg

left-menu-item-02.jpg

580 ms

left-menu-item-03.jpg

left-menu-item-03.jpg

658 ms

left-menu-item-04.jpg

left-menu-item-04.jpg

678 ms

bg-action-wrapper.jpg

bg-action-wrapper.jpg

695 ms

vint-phone.gif

vint-phone.gif

696 ms

ico-mailing.jpg

ico-mailing.jpg

697 ms

nejprodavanejsi.png

nejprodavanejsi.png

738 ms

nejhledanejsi.png

nejhledanejsi.png

764 ms

bg-footer.jpg

bg-footer.jpg

783 ms

ga.js

ga.js

5 ms

retargeting

retargeting

104 ms

__utm.gif

__utm.gif

14 ms

print.css

print.css

119 ms

Accessibility Review

biosdobris.cz accessibility score

58

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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.

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

biosdobris.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

biosdobris.cz SEO score

91

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Biosdobris.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Biosdobris.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

biosdobris.cz

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