Tools & Wizards About Us
dexter.cz screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

dexter.cz

Cyklo oblečení Dexter | Cyklodresy na zakázku Dexter

Page Load Speed

5.1 sec in total

First Response

1.6 sec

Resources Loaded

3.1 sec

Page Rendered

401 ms

dexter.cz screenshot

About Website

Welcome to dexter.cz homepage info - get ready to check Dexter best content right away, or after learning these important things about dexter.cz

Cyklo oblečení značky Dexter - cyklistické dresy, kalhoty a doplňky pro rekreační i závodní cyklisty, výroba dresů a potisk na zakázku.

Visit dexter.cz

Key Findings

We analyzed Dexter.cz page load time and found that the first response time was 1.6 sec and then it took 3.5 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

dexter.cz performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value6.9 s

33/100

10%

TBT (Total Blocking Time)

Value250 ms

84/100

30%

CLS (Cumulative Layout Shift)

Value0.445

20/100

15%

TTI (Time to Interactive)

Value8.6 s

37/100

10%

Network Requests Diagram

dexter.cz

1581 ms

styl.css

400 ms

slimbox2.css

207 ms

styluser.css

304 ms

coinslider.css

204 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 81% of them (81 requests) were addressed to the original Dexter.cz, 13% (13 requests) were made to Static.xx.fbcdn.net and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Dexter.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 407.8 kB (44%)

Content Size

934.0 kB

After Optimization

526.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dexter.cz main page is 934.0 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. 55% of websites need less resources to load. Images take 579.6 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 69.2 kB

  • Original 91.7 kB
  • After minification 87.6 kB
  • After compression 22.5 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 69.2 kB or 76% of the original size.

Image Optimization

-25%

Potential reduce by 143.8 kB

  • Original 579.6 kB
  • After minification 435.9 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. Obviously, Dexter needs image optimization as it can save up to 143.8 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-63%

Potential reduce by 93.3 kB

  • Original 147.3 kB
  • After minification 128.4 kB
  • After compression 54.0 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 93.3 kB or 63% of the original size.

CSS Optimization

-88%

Potential reduce by 101.5 kB

  • Original 115.3 kB
  • After minification 84.0 kB
  • After compression 13.8 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. Dexter.cz needs all CSS files to be minified and compressed as it can save up to 101.5 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 44 (48%)

Requests Now

92

After Optimization

48

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dexter. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dexter.cz

dexter.cz

1581 ms

styl.css

styl.css

400 ms

slimbox2.css

slimbox2.css

207 ms

styluser.css

styluser.css

304 ms

coinslider.css

coinslider.css

204 ms

banner-zalozka.css

banner-zalozka.css

207 ms

tree.js

tree.js

290 ms

zamena.js

zamena.js

303 ms

jquery.min.js

jquery.min.js

507 ms

slimbox2.js

slimbox2.js

317 ms

zalozky.js

zalozky.js

389 ms

AJAX.js

AJAX.js

403 ms

NaseptavacAJAX.js

NaseptavacAJAX.js

404 ms

Naseptavac.js

Naseptavac.js

429 ms

HlidaciPes.js

HlidaciPes.js

498 ms

Zasilkovna.js

Zasilkovna.js

496 ms

DopravaZdarma.js

DopravaZdarma.js

514 ms

Kupony.js

Kupony.js

503 ms

KeepAlive.js

KeepAlive.js

531 ms

jquery-1.4.2.min.js

jquery-1.4.2.min.js

597 ms

coinslider.js

coinslider.js

599 ms

KeepAlive.aspx

KeepAlive.aspx

155 ms

ga.js

ga.js

27 ms

f-najdete-nas-na-facebooku-119x35.png

f-najdete-nas-na-facebooku-119x35.png

438 ms

bgMain.jpg

bgMain.jpg

163 ms

logo-shop.png

logo-shop.png

161 ms

btn-search.png

btn-search.png

105 ms

oddelovac-lista-navi1.png

oddelovac-lista-navi1.png

107 ms

sez0.gif

sez0.gif

106 ms

tab1.gif

tab1.gif

167 ms

pre0.gif

pre0.gif

200 ms

oddelovac-lista-navi2.png

oddelovac-lista-navi2.png

198 ms

cze.jpg

cze.jpg

246 ms

eng.jpg

eng.jpg

210 ms

deu.jpg

deu.jpg

213 ms

lock.png

lock.png

271 ms

bg-kosik.png

bg-kosik.png

349 ms

zavrit.png

zavrit.png

345 ms

btn_ok.gif

btn_ok.gif

425 ms

bod0.gif

bod0.gif

424 ms

bod-v.gif

bod-v.gif

426 ms

2019_07_17_banner_neon.jpg

2019_07_17_banner_neon.jpg

478 ms

2019_03_19_banner_narozeniny.jpg

2019_03_19_banner_narozeniny.jpg

514 ms

down.gif

down.gif

432 ms

up_c1.gif

up_c1.gif

433 ms

up.gif

up.gif

435 ms

s_zakazka_cyklo_sk.jpg

s_zakazka_cyklo_sk.jpg

454 ms

s_dres_splashdex_race_man_red_sk.jpg

s_dres_splashdex_race_man_red_sk.jpg

502 ms

s_kalhoty_foot_kratke_gold_sk.jpg

s_kalhoty_foot_kratke_gold_sk.jpg

514 ms

s_bunda_retro_cssr_modra_new_sk.jpg

s_bunda_retro_cssr_modra_new_sk.jpg

578 ms

s_triko_ecomotor_96citron_m_sk.jpg

s_triko_ecomotor_96citron_m_sk.jpg

544 ms

s_klubove_obleceni_kolekce_sk.jpg

s_klubove_obleceni_kolekce_sk.jpg

584 ms

s_navlek_nohy_light_dexter_cycling_red_sk.jpg

s_navlek_nohy_light_dexter_cycling_red_sk.jpg

604 ms

s_cepice_gava_czech_black_sk.jpg

s_cepice_gava_czech_black_sk.jpg

612 ms

s_ponozky_dexter_klasic_cerne_01_sk.jpg

s_ponozky_dexter_klasic_cerne_01_sk.jpg

613 ms

s_leginy_AMBROSIA_PUSHUP_black-pink_sk.jpg

s_leginy_AMBROSIA_PUSHUP_black-pink_sk.jpg

644 ms

s_minidres_dexter_bsk_racing_sk.jpg

s_minidres_dexter_bsk_racing_sk.jpg

680 ms

s_e-shop_darkovy_poukaz_500kc_sk.jpg

s_e-shop_darkovy_poukaz_500kc_sk.jpg

694 ms

ba_trika_s_potiskem_sk.jpg

ba_trika_s_potiskem_sk.jpg

699 ms

fbevents.js

fbevents.js

81 ms

__utm.gif

__utm.gif

25 ms

DEXTER-paracycling.png

DEXTER-paracycling.png

620 ms

likebox.php

likebox.php

168 ms

DEXTER-racing.png

DEXTER-racing.png

616 ms

Dexter-cycling.png

Dexter-cycling.png

650 ms

akceptujmeKarty0.png

akceptujmeKarty0.png

631 ms

641 ms

loga2.png

loga2.png

769 ms

dalsieshopy.png

dalsieshopy.png

671 ms

bgTabulka.jpg

bgTabulka.jpg

679 ms

bg-svisle.jpg

bg-svisle.jpg

657 ms

bg-topTabulka.jpg

bg-topTabulka.jpg

679 ms

nic.jpg

nic.jpg

691 ms

bg-lista-navigaceKos.jpg

bg-lista-navigaceKos.jpg

692 ms

YSVNzQMiK3c.css

YSVNzQMiK3c.css

21 ms

DaPJf3IFK7Z.js

DaPJf3IFK7Z.js

34 ms

Y4zFOWmUObv.js

Y4zFOWmUObv.js

28 ms

8O2J-mJIMh1.js

8O2J-mJIMh1.js

34 ms

QCHZeiE_shc.js

QCHZeiE_shc.js

77 ms

4aFcRp6-srT.js

4aFcRp6-srT.js

82 ms

Mgao39tvtRW.js

Mgao39tvtRW.js

80 ms

0bio7TMsDws.js

0bio7TMsDws.js

33 ms

kY8eYg-9-SS.js

kY8eYg-9-SS.js

90 ms

DJbp39Fn87q.js

DJbp39Fn87q.js

88 ms

p55HfXW__mM.js

p55HfXW__mM.js

93 ms

bgNaseptavac-nic.jpg

bgNaseptavac-nic.jpg

682 ms

bg-tabulka-prihlasit.png

bg-tabulka-prihlasit.png

631 ms

bg-sekce-nadpis.jpg

bg-sekce-nadpis.jpg

640 ms

301139248_582494019906292_7998004367227655815_n.jpg

301139248_582494019906292_7998004367227655815_n.jpg

180 ms

QoMTH0SpLC5.js

QoMTH0SpLC5.js

20 ms

301180925_582494016572959_7814576875489496289_n.jpg

301180925_582494016572959_7814576875489496289_n.jpg

181 ms

UXtr_j2Fwe-.png

UXtr_j2Fwe-.png

15 ms

bg-sekce-pozadi.jpg

bg-sekce-pozadi.jpg

582 ms

bg-sekce-nadpis-hlavni.jpg

bg-sekce-nadpis-hlavni.jpg

616 ms

bg-lista-tridit.jpg

bg-lista-tridit.jpg

606 ms

bg-main-bottom.jpg

bg-main-bottom.jpg

619 ms

bg-banner-zalozka.jpg

bg-banner-zalozka.jpg

644 ms

xxx.png

xxx.png

651 ms

btn-bck.png

btn-bck.png

656 ms

btn-fwd.png

btn-fwd.png

659 ms

Accessibility Review

dexter.cz accessibility score

61

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

<frame> or <iframe> elements do not have a title

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

dexter.cz best practices score

58

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

SEO Factors

dexter.cz SEO score

77

Search Engine Optimization Advices

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 Dexter.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 Dexter.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

dexter.cz

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