Tools & Wizards About Us
zsdvojka.sk screenshot

Report Summary

  • 52

    Performance

    Renders faster than
    69% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

zsdvojka.sk

Základná škola, Sídlisko II 1336, Vranov nad Topľou

Page Load Speed

9.4 sec in total

First Response

3 sec

Resources Loaded

6 sec

Page Rendered

395 ms

zsdvojka.sk screenshot

About Website

Welcome to zsdvojka.sk homepage info - get ready to check Zsdvojka best content for Slovakia right away, or after learning these important things about zsdvojka.sk

Oficiálne webové sídlo Základnej školy, Sídlisko II 1336, Vranov nad Topľou.

Visit zsdvojka.sk

Key Findings

We analyzed Zsdvojka.sk page load time and found that the first response time was 3 sec and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

zsdvojka.sk performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

23/100

25%

SI (Speed Index)

Value9.3 s

13/100

10%

TBT (Total Blocking Time)

Value320 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0.054

98/100

15%

TTI (Time to Interactive)

Value6.5 s

58/100

10%

Network Requests Diagram

zsdvojka.sk

2985 ms

widgetkit-a27a09bf.css

195 ms

skitter.css

293 ms

mootools-core.js

445 ms

core.js

311 ms

Our browser made a total of 92 requests to load all elements on the main page. We found that 96% of them (88 requests) were addressed to the original Zsdvojka.sk, 2% (2 requests) were made to Ssl.google-analytics.com and 1% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (3 sec) belongs to the original domain Zsdvojka.sk.

Page Optimization Overview & Recommendations

Page size can be reduced by 85.9 kB (5%)

Content Size

1.6 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zsdvojka.sk main page is 1.6 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. 35% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 44.8 kB

  • Original 58.9 kB
  • After minification 56.3 kB
  • After compression 14.1 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 44.8 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 9.6 kB

  • Original 1.3 MB
  • After minification 1.3 MB

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. Zsdvojka images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 27.8 kB

  • Original 187.1 kB
  • After minification 186.7 kB
  • After compression 159.3 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 27.8 kB or 15% of the original size.

CSS Optimization

-15%

Potential reduce by 3.7 kB

  • Original 24.4 kB
  • After minification 24.4 kB
  • After compression 20.7 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. Zsdvojka.sk needs all CSS files to be minified and compressed as it can save up to 3.7 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 55 (60%)

Requests Now

91

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 91 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zsdvojka. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zsdvojka.sk

zsdvojka.sk

2985 ms

widgetkit-a27a09bf.css

widgetkit-a27a09bf.css

195 ms

skitter.css

skitter.css

293 ms

mootools-core.js

mootools-core.js

445 ms

core.js

core.js

311 ms

caption.js

caption.js

314 ms

jquery.js

jquery.js

536 ms

widgetkit-7419ddb2.js

widgetkit-7419ddb2.js

319 ms

jquery-1.5.2.min.js

jquery-1.5.2.min.js

493 ms

reset.css

reset.css

414 ms

layout.css

layout.css

418 ms

typography.css

typography.css

425 ms

menus.css

menus.css

519 ms

modules.css

modules.css

524 ms

system.css

system.css

531 ms

extensions.css

extensions.css

557 ms

style.css

style.css

590 ms

green.css

green.css

623 ms

custom.css

custom.css

628 ms

warp.js

warp.js

638 ms

accordionmenu.js

accordionmenu.js

641 ms

dropdownmenu.js

dropdownmenu.js

640 ms

template.js

template.js

687 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

727 ms

jquery.animate-colors-min.js

jquery.animate-colors-min.js

733 ms

jquery.skitter.min.js

jquery.skitter.min.js

744 ms

lightbox.js

lightbox.js

197 ms

mediaelement-and-player.js

mediaelement-and-player.js

209 ms

spotlight.js

spotlight.js

240 ms

system.css

system.css

276 ms

system.css

system.css

283 ms

page_header_bg.png

page_header_bg.png

99 ms

bubbles_green.jpg

bubbles_green.jpg

1238 ms

headerbar_bg.png

headerbar_bg.png

118 ms

topmenu_item_bg.png

topmenu_item_bg.png

102 ms

fcb_icon.png

fcb_icon.png

118 ms

ig_icon.png

ig_icon.png

118 ms

ytb_icon.png

ytb_icon.png

195 ms

rss_icon.png

rss_icon.png

201 ms

dvojka_horizontal2.png

dvojka_horizontal2.png

423 ms

menu_level1_item_parent.png

menu_level1_item_parent.png

213 ms

menu_dropdown_corners.png

menu_dropdown_corners.png

215 ms

menu_dropdown_edges.png

menu_dropdown_edges.png

294 ms

menu_level3_item.png

menu_level3_item.png

299 ms

headermodules_bg.png

headermodules_bg.png

318 ms

uds.jpg

uds.jpg

951 ms

sporta.jpg

sporta.jpg

682 ms

kompliment.jpg

kompliment.jpg

496 ms

lopty_mini.jpg

lopty_mini.jpg

422 ms

volejbal_mini.jpg

volejbal_mini.jpg

528 ms

ferdo_mini.jpg

ferdo_mini.jpg

528 ms

stur_mini.jpg

stur_mini.jpg

597 ms

hlas_mini.jpg

hlas_mini.jpg

635 ms

znaksr_mini.jpg

znaksr_mini.jpg

637 ms

klokan_mini.jpg

klokan_mini.jpg

695 ms

technika_mini.jpg

technika_mini.jpg

740 ms

etwinning_logo.gif

etwinning_logo.gif

1053 ms

pop3_mini2.jpg

pop3_mini2.jpg

875 ms

logo_etwinning.png

logo_etwinning.png

989 ms

music.jpg

music.jpg

1162 ms

embed

embed

259 ms

page_body_bg.png

page_body_bg.png

947 ms

article_separator.png

article_separator.png

1028 ms

system_date.png

system_date.png

1043 ms

module_shadowbox_corners.png

module_shadowbox_corners.png

1061 ms

module_shadowbox_edges.png

module_shadowbox_edges.png

1130 ms

wrapper_right_corners.png

wrapper_right_corners.png

1135 ms

wrapper_edges.png

wrapper_edges.png

1142 ms

ga.js

ga.js

49 ms

submenu_level1_item.png

submenu_level1_item.png

1094 ms

submenu_level1_parent.png

submenu_level1_parent.png

1164 ms

__utm.gif

__utm.gif

11 ms

submenu_level2_item.png

submenu_level2_item.png

1153 ms

list_arrow.png

list_arrow.png

1153 ms

module_line.png

module_line.png

1151 ms

module_badges.png

module_badges.png

1094 ms

module_box_corners.png

module_box_corners.png

1142 ms

module_box_edges.png

module_box_edges.png

1157 ms

module_box_bg.png

module_box_bg.png

1152 ms

js

js

51 ms

module_icons.png

module_icons.png

1083 ms

page_footer_bg.png

page_footer_bg.png

1078 ms

module_separator_corners_dark.png

module_separator_corners_dark.png

1071 ms

module_separator_edge_dark.png

module_separator_edge_dark.png

1023 ms

module_box_edges_dark.png

module_box_edges_dark.png

1042 ms

footer_anchor.png

footer_anchor.png

979 ms

footermenu_item_bg.png

footermenu_item_bg.png

953 ms

prev.png

prev.png

953 ms

next.png

next.png

890 ms

back-box-label-black.png

back-box-label-black.png

937 ms

ajax-loader.gif

ajax-loader.gif

924 ms

menu_level1_item_fancy.png

menu_level1_item_fancy.png

897 ms

Accessibility Review

zsdvojka.sk accessibility score

67

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

Image elements do not have [alt] attributes

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

Best Practices

zsdvojka.sk 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

SEO Factors

zsdvojka.sk SEO score

62

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

Language and Encoding

  • Language Detected

    SK

  • Language Claimed

    SK

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zsdvojka.sk can be misinterpreted by Google and other search engines. Our service has detected that Slovak is used on the page, and it matches the claimed language. Our system also found out that Zsdvojka.sk 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

zsdvojka.sk

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