Tools & Wizards About Us
expert.cz screenshot

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

expert.cz

Expert Elektro - TV, audio, bílé zboží, foto, GPS, telefony

Page Load Speed

4.9 sec in total

First Response

927 ms

Resources Loaded

3.6 sec

Page Rendered

332 ms

expert.cz screenshot

About Website

Welcome to expert.cz homepage info - get ready to check Expert best content for Poland right away, or after learning these important things about expert.cz

expert Elektro je maloobchodní prodejce elektra, domácích spotřebičů, černé techniky, mobilů a IT. Nově můžete objednávat i online na www.expert.cz.

Visit expert.cz

Key Findings

We analyzed Expert.cz page load time and found that the first response time was 927 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

expert.cz performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.5 s

1/100

10%

LCP (Largest Contentful Paint)

Value14.8 s

0/100

25%

SI (Speed Index)

Value20.2 s

0/100

10%

TBT (Total Blocking Time)

Value18,540 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.242

51/100

15%

TTI (Time to Interactive)

Value30.7 s

0/100

10%

Network Requests Diagram

www.expert.cz

927 ms

ss-symbolicons-block.css

527 ms

ss-social.css

318 ms

content.css

421 ms

font-awesome.min.css

530 ms

Our browser made a total of 132 requests to load all elements on the main page. We found that 56% of them (74 requests) were addressed to the original Expert.cz, 4% (5 requests) were made to Google.com and 3% (4 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Api.myx.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 724.2 kB (50%)

Content Size

1.4 MB

After Optimization

722.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Expert.cz main page is 1.4 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. Javascripts take 586.5 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 81.1 kB

  • Original 102.8 kB
  • After minification 97.0 kB
  • After compression 21.7 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 81.1 kB or 79% of the original size.

Image Optimization

-7%

Potential reduce by 34.2 kB

  • Original 495.3 kB
  • After minification 461.1 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. Expert images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 404.2 kB

  • Original 586.5 kB
  • After minification 483.7 kB
  • After compression 182.3 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 404.2 kB or 69% of the original size.

CSS Optimization

-78%

Potential reduce by 204.7 kB

  • Original 262.6 kB
  • After minification 231.4 kB
  • After compression 57.9 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. Expert.cz needs all CSS files to be minified and compressed as it can save up to 204.7 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 79 (79%)

Requests Now

100

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Expert. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 45 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.expert.cz

www.expert.cz

927 ms

ss-symbolicons-block.css

ss-symbolicons-block.css

527 ms

ss-social.css

ss-social.css

318 ms

content.css

content.css

421 ms

font-awesome.min.css

font-awesome.min.css

530 ms

layout.css

layout.css

740 ms

pdbox.css

pdbox.css

422 ms

jquery-ui.css

jquery-ui.css

72 ms

patch.css

patch.css

524 ms

pipapatch.css

pipapatch.css

525 ms

lightbox.css

lightbox.css

526 ms

cookiecontrol.css

cookiecontrol.css

625 ms

modernizr.min.js

modernizr.min.js

14 ms

jquery-1.11.2.min.js

jquery-1.11.2.min.js

731 ms

jquery.tools.min.js

jquery.tools.min.js

625 ms

jquery-ui.js

jquery-ui.js

730 ms

jquery-migrate-1.0.0.js

jquery-migrate-1.0.0.js

768 ms

jquery.pdbox.js

jquery.pdbox.js

726 ms

jquery.pdAjaxForm.js

jquery.pdAjaxForm.js

728 ms

jquery.carouFredSel.js

jquery.carouFredSel.js

936 ms

jquery.hoverIntent.min.js

jquery.hoverIntent.min.js

835 ms

menu-control.js

menu-control.js

833 ms

main.js

main.js

836 ms

plusone.js

plusone.js

100 ms

jquery-ui.min.js

jquery-ui.min.js

66 ms

lightbox.min.js

lightbox.min.js

833 ms

jquery.form.js

jquery.form.js

835 ms

shp.js

shp.js

1044 ms

HoverBox.js

HoverBox.js

969 ms

shp_1_2.js

shp_1_2.js

971 ms

lang_1.js

lang_1.js

971 ms

ajax.js

ajax.js

971 ms

jqueryquestions.js

jqueryquestions.js

1039 ms

jquery.cookie.js

jquery.cookie.js

1053 ms

function.js

function.js

1152 ms

jquery.qtip-1.0.0.min.js

jquery.qtip-1.0.0.min.js

1053 ms

cookiecontrol.js

cookiecontrol.js

1054 ms

jquery.ui.touch-punch.js

jquery.ui.touch-punch.js

1143 ms

blackbird.js

blackbird.js

1147 ms

debug_tools.js

debug_tools.js

1063 ms

conversion.js

conversion.js

16 ms

blackbird.css

blackbird.css

859 ms

integration

integration

163 ms

bg-body.png

bg-body.png

409 ms

close.png

close.png

547 ms

loading.gif

loading.gif

547 ms

prev.png

prev.png

546 ms

next.png

next.png

547 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

33 ms

analytics.js

analytics.js

71 ms

72 ms

22733-3.png

22733-3.png

208 ms

logo.png

logo.png

178 ms

logo.small.png

logo.small.png

177 ms

cs_generic_rgb_wo_45.png

cs_generic_rgb_wo_45.png

211 ms

app_store_badge.png

app_store_badge.png

209 ms

Z160448_specialni_slidy_brezen_NB_LENOVO_web_800x320_proc1.jpg

Z160448_specialni_slidy_brezen_NB_LENOVO_web_800x320_proc1.jpg

630 ms

Predobjednavky_2.jpg

Predobjednavky_2.jpg

324 ms

Bosch_susicka_kos_800x320_CZ_01.jpg

Bosch_susicka_kos_800x320_CZ_01.jpg

260 ms

velke-spotrebice.jpg

velke-spotrebice.jpg

259 ms

vestavne-spotrebice.jpg

vestavne-spotrebice.jpg

322 ms

male-spotrebice.jpg

male-spotrebice.jpg

323 ms

TV-audio-video.jpg

TV-audio-video.jpg

369 ms

Foto-GPS-telefony.jpg

Foto-GPS-telefony.jpg

370 ms

Telo-zdravi.jpg

Telo-zdravi.jpg

420 ms

Pocitace.jpg

Pocitace.jpg

422 ms

category-banner.png

category-banner.png

529 ms

Logo.jpg

Logo.jpg

472 ms

MM13718LOGO-b.jpg

MM13718LOGO-b.jpg

472 ms

leaflet.jpg

leaflet.jpg

630 ms

apek.png

apek.png

528 ms

gtm.js

gtm.js

138 ms

actions.js

actions.js

460 ms

persoo.js

persoo.js

474 ms

menu-holder.png

menu-holder.png

559 ms

all24.png

all24.png

665 ms

mapa.jpg

mapa.jpg

853 ms

company-about.png

company-about.png

618 ms

120 ms

bg-footer.png

bg-footer.png

624 ms

bg-compare.png

bg-compare.png

670 ms

108 ms

nexabold-webfont.woff

nexabold-webfont.woff

669 ms

ss-symbolicons-block.woff

ss-symbolicons-block.woff

804 ms

nexabook-webfont.woff

nexabook-webfont.woff

722 ms

nexaheavy-webfont.woff

nexaheavy-webfont.woff

741 ms

gjs.php

gjs.php

236 ms

collect

collect

78 ms

collect

collect

94 ms

arrowU.png

arrowU.png

705 ms

36 ms

pixel

pixel

35 ms

Pug

Pug

51 ms

conversion_async.js

conversion_async.js

16 ms

439 ms

retargeting.js

retargeting.js

233 ms

myx.js

myx.js

1330 ms

fbevents.js

fbevents.js

149 ms

17 ms

sync

sync

13 ms

23 ms

cm

cm

167 ms

20 ms

tags

tags

184 ms

19 ms

ga-audiences

ga-audiences

23 ms

23 ms

32 ms

widget.php

widget.php

133 ms

UserMatch.ashx

UserMatch.ashx

12 ms

pixel

pixel

230 ms

pixel

pixel

15 ms

106 ms

RtbHouse

RtbHouse

232 ms

tagging

tagging

89 ms

Pug

Pug

19 ms

match

match

5 ms

cm

cm

158 ms

retargeting

retargeting

114 ms

sd

sd

31 ms

workflow

workflow

312 ms

1by1.png

1by1.png

16 ms

217 ms

plusone.js

plusone.js

56 ms

all.js

all.js

207 ms

collect

collect

34 ms

print.css

print.css

108 ms

29 ms

xd_arbiter.php

xd_arbiter.php

215 ms

xd_arbiter.php

xd_arbiter.php

443 ms

layout-mobile.css

layout-mobile.css

214 ms

tap.php

tap.php

512 ms

Accessibility Review

expert.cz accessibility score

71

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

Image elements do not have [alt] attributes

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.

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 IDs are not unique

Best Practices

expert.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

expert.cz SEO score

82

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Expert.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 Expert.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

expert.cz

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