Tools & Wizards About Us
zdz.krakow.pl screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

zdz.krakow.pl

ZDZ Kraków - Kursy, Szkolenia, Produkcja, Bezpłatne Szkoły dla dorosłych i młodzieży

Page Load Speed

5.7 sec in total

First Response

1.9 sec

Resources Loaded

3.6 sec

Page Rendered

168 ms

zdz.krakow.pl screenshot

About Website

Visit zdz.krakow.pl now to see the best up-to-date ZDZ content for Poland and also check out these interesting facts you probably never knew about zdz.krakow.pl

Zakład Doskonalenia Zawodowego w Krakowie, bezpłatne szkoły dla dorosłych i młodzieży, liceum wojskowe

Visit zdz.krakow.pl

Key Findings

We analyzed Zdz.krakow.pl page load time and found that the first response time was 1.9 sec and then it took 3.7 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

zdz.krakow.pl performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

40/100

10%

LCP (Largest Contentful Paint)

Value14.6 s

0/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value250 ms

85/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.8 s

36/100

10%

Network Requests Diagram

zdz.krakow.pl

1937 ms

attachments1.css

123 ms

attachments.css

245 ms

style1.css

245 ms

whcookies.js

246 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 58% of them (39 requests) were addressed to the original Zdz.krakow.pl, 28% (19 requests) were made to Static.xx.fbcdn.net and 3% (2 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Zdz.krakow.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 241.0 kB (26%)

Content Size

920.9 kB

After Optimization

679.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zdz.krakow.pl main page is 920.9 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. 65% of websites need less resources to load. Images take 822.1 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 27.8 kB

  • Original 37.4 kB
  • After minification 36.2 kB
  • After compression 9.6 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 27.8 kB or 74% of the original size.

Image Optimization

-25%

Potential reduce by 204.2 kB

  • Original 822.1 kB
  • After minification 617.9 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, ZDZ needs image optimization as it can save up to 204.2 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

-11%

Potential reduce by 5.8 kB

  • Original 50.9 kB
  • After minification 50.9 kB
  • After compression 45.2 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 5.8 kB or 11% of the original size.

CSS Optimization

-31%

Potential reduce by 3.3 kB

  • Original 10.4 kB
  • After minification 10.2 kB
  • After compression 7.2 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. Zdz.krakow.pl needs all CSS files to be minified and compressed as it can save up to 3.3 kB or 31% of the original size.

Requests Breakdown

Number of requests can be reduced by 48 (74%)

Requests Now

65

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZDZ. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zdz.krakow.pl

zdz.krakow.pl

1937 ms

attachments1.css

attachments1.css

123 ms

attachments.css

attachments.css

245 ms

style1.css

style1.css

245 ms

whcookies.js

whcookies.js

246 ms

system.css

system.css

247 ms

general.css

general.css

247 ms

editor.css

editor.css

247 ms

template.css

template.css

367 ms

ja.script.js

ja.script.js

366 ms

ja.transmenuh.css

ja.transmenuh.css

370 ms

ja.transmenu.js

ja.transmenu.js

370 ms

warm.css

warm.css

369 ms

opacity.js

opacity.js

488 ms

jquery.min.js

jquery.min.js

10 ms

baner2.jpg

baner2.jpg

842 ms

uslugi.png

uslugi.png

841 ms

tel2.png

tel2.png

124 ms

emailButton.png

emailButton.png

123 ms

facebook_button.png

facebook_button.png

393 ms

zapisy-online.gif

zapisy-online.gif

124 ms

mpku1.jpg

mpku1.jpg

124 ms

logo%20cmyk.jpg

logo%20cmyk.jpg

1098 ms

fb1.png

fb1.png

244 ms

but-xhtml10-warm.gif

but-xhtml10-warm.gif

244 ms

arrow.png

arrow.png

243 ms

shadowleft-bg.gif

shadowleft-bg.gif

244 ms

shadowright-bg.gif

shadowright-bg.gif

390 ms

header-bg.jpg

header-bg.jpg

1138 ms

trans-bg2.png

trans-bg2.png

390 ms

all.js

all.js

20 ms

x.gif

x.gif

378 ms

sep.gif

sep.gif

472 ms

box2-br.gif

box2-br.gif

469 ms

box2-bl.gif

box2-bl.gif

469 ms

box2-tr.gif

box2-tr.gif

470 ms

box2-tl.gif

box2-tl.gif

590 ms

a-mainlevel-bg.gif

a-mainlevel-bg.gif

591 ms

but-bg.gif

but-bg.gif

591 ms

grad3.gif

grad3.gif

591 ms

grad1.gif

grad1.gif

700 ms

ga.js

ga.js

9 ms

all.js

all.js

25 ms

likebox.php

likebox.php

220 ms

__utm.gif

__utm.gif

17 ms

44 ms

YSVNzQMiK3c.css

YSVNzQMiK3c.css

27 ms

fuU9ChcFal0.css

fuU9ChcFal0.css

25 ms

bCneGe3bvTG.css

bCneGe3bvTG.css

28 ms

VWDhCULazb5.js

VWDhCULazb5.js

35 ms

5xOV5e9oy4e.js

5xOV5e9oy4e.js

34 ms

mP12tTiNgO_.js

mP12tTiNgO_.js

32 ms

o1ndYS2og_B.js

o1ndYS2og_B.js

32 ms

owo2sPJxB2z.js

owo2sPJxB2z.js

33 ms

p55HfXW__mM.js

p55HfXW__mM.js

33 ms

k_PjgALRjoR.js

k_PjgALRjoR.js

64 ms

YEtUGb-ToKw.js

YEtUGb-ToKw.js

69 ms

XKFYjgE7mEh.js

XKFYjgE7mEh.js

73 ms

g2XPN2wRGmV.js

g2XPN2wRGmV.js

65 ms

jPxttT8EeZS.js

jPxttT8EeZS.js

68 ms

kgAz0TBWoYE.js

kgAz0TBWoYE.js

65 ms

DPxpTcknHiI.js

DPxpTcknHiI.js

71 ms

HzxD9aAXSyD.js

HzxD9aAXSyD.js

70 ms

386730428_823591226391700_7652917590775437342_n.jpg

386730428_823591226391700_7652917590775437342_n.jpg

140 ms

u2HYktv2mdq.js

u2HYktv2mdq.js

10 ms

328810340_618962616905719_4671296290046011496_n.jpg

328810340_618962616905719_4671296290046011496_n.jpg

52 ms

UXtr_j2Fwe-.png

UXtr_j2Fwe-.png

8 ms

Accessibility Review

zdz.krakow.pl accessibility score

61

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

Form elements do not have associated labels

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

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

zdz.krakow.pl best practices score

50

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

High

Browser errors were logged to the console

SEO Factors

zdz.krakow.pl SEO score

69

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zdz.krakow.pl can be misinterpreted by Google and other search engines. Our service has detected that English 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 Zdz.krakow.pl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

zdz.krakow.pl

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