Tools & Wizards About Us
skolnistranky.cz screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

skolnistranky.cz

Skolnistranky.cz – studentské stránky základních a středních škol bez cenzury

Page Load Speed

25.9 sec in total

First Response

320 ms

Resources Loaded

25.4 sec

Page Rendered

185 ms

skolnistranky.cz screenshot

About Website

Click here to check amazing Skolnistranky content for Czech Republic. Otherwise, check out these important facts you probably never knew about skolnistranky.cz

Studentské stránky bez cenzury a katalog základních a středních škol v ČR. To jsou Školní stránky.cz.

Visit skolnistranky.cz

Key Findings

We analyzed Skolnistranky.cz page load time and found that the first response time was 320 ms and then it took 25.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

skolnistranky.cz performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value11.6 s

0/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value12.7 s

14/100

10%

Network Requests Diagram

skolnistranky.cz

320 ms

www.skolnistranky.cz

3148 ms

styles.css

330 ms

thickbox.css

220 ms

jquery-1.6.2.min.js

549 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 83% of them (54 requests) were addressed to the original Skolnistranky.cz, 9% (6 requests) were made to Reklama.kampomaturite.cz and 3% (2 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (20.4 sec) belongs to the original domain Skolnistranky.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 157.3 kB (36%)

Content Size

433.6 kB

After Optimization

276.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Skolnistranky.cz main page is 433.6 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. 30% of websites need less resources to load. Javascripts take 229.7 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 26.2 kB

  • Original 37.1 kB
  • After minification 34.7 kB
  • After compression 10.9 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 26.2 kB or 71% of the original size.

Image Optimization

-12%

Potential reduce by 16.3 kB

  • Original 132.1 kB
  • After minification 115.8 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, Skolnistranky needs image optimization as it can save up to 16.3 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-38%

Potential reduce by 87.0 kB

  • Original 229.7 kB
  • After minification 223.8 kB
  • After compression 142.7 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 87.0 kB or 38% of the original size.

CSS Optimization

-80%

Potential reduce by 27.9 kB

  • Original 34.7 kB
  • After minification 25.8 kB
  • After compression 6.8 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. Skolnistranky.cz needs all CSS files to be minified and compressed as it can save up to 27.9 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (59%)

Requests Now

61

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Skolnistranky. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

skolnistranky.cz

skolnistranky.cz

320 ms

www.skolnistranky.cz

www.skolnistranky.cz

3148 ms

styles.css

styles.css

330 ms

thickbox.css

thickbox.css

220 ms

jquery-1.6.2.min.js

jquery-1.6.2.min.js

549 ms

thickbox.js

thickbox.js

221 ms

ajax_nahlaseni.js

ajax_nahlaseni.js

221 ms

ajax_hlasovani.js

ajax_hlasovani.js

20418 ms

spcjs.php

spcjs.php

478 ms

show_ads.js

show_ads.js

68 ms

b-prihlasitse.png

b-prihlasitse.png

438 ms

google.png

google.png

438 ms

b-vyhledat.png

b-vyhledat.png

439 ms

nahled_Adriena__5776.jpg

nahled_Adriena__5776.jpg

454 ms

nahled_Sussi__8853.jpg

nahled_Sussi__8853.jpg

552 ms

nahled_Sussi__320.jpg

nahled_Sussi__320.jpg

553 ms

scripts.js

scripts.js

552 ms

cookie2022.css

cookie2022.css

661 ms

cookie2022jqf.js

cookie2022jqf.js

672 ms

nahled_16f0f9b7bab6872b8012d544be76974d1221515189.jpg

nahled_16f0f9b7bab6872b8012d544be76974d1221515189.jpg

783 ms

nahled_56285c9190804f10f4cbb949150b8c411219080198.jpg

nahled_56285c9190804f10f4cbb949150b8c411219080198.jpg

788 ms

nahled_6253c79c5130cc41d63985903955e8901219080182.jpg

nahled_6253c79c5130cc41d63985903955e8901219080182.jpg

795 ms

nahled__17607.jpg

nahled__17607.jpg

879 ms

nahled_9b4bf7540583fb2dc148667dcb50507f1229215160.jpg

nahled_9b4bf7540583fb2dc148667dcb50507f1229215160.jpg

898 ms

nahled_c26c0438782d70e272e9b9207085fc841229215160.jpg

nahled_c26c0438782d70e272e9b9207085fc841229215160.jpg

1000 ms

spc.php

spc.php

433 ms

fl.js

fl.js

316 ms

print.css

print.css

221 ms

analytics.js

analytics.js

11 ms

header.png

header.png

220 ms

header-illustration.gif

header-illustration.gif

330 ms

logo.png

logo.png

221 ms

login.gif

login.gif

219 ms

input.png

input.png

221 ms

menu.png

menu.png

221 ms

rss.png

rss.png

437 ms

683b86a231c69556b344d2feb7d20b23.gif

683b86a231c69556b344d2feb7d20b23.gif

437 ms

box.png

box.png

452 ms

box-top.png

box-top.png

456 ms

box-bracket.png

box-bracket.png

460 ms

chcisezaregistrovat.png

chcisezaregistrovat.png

453 ms

box-bottom.png

box-bottom.png

552 ms

search-input.png

search-input.png

648 ms

section-header.png

section-header.png

670 ms

i-nejnovejsivzkazy.png

i-nejnovejsivzkazy.png

672 ms

mail.gif

mail.gif

674 ms

more.png

more.png

678 ms

lg.php

lg.php

272 ms

adsbygoogle.js

adsbygoogle.js

113 ms

collect

collect

8 ms

i-posledniblognuti.png

i-posledniblognuti.png

745 ms

comment.gif

comment.gif

842 ms

nej.jpg

nej.jpg

863 ms

i-nej.png

i-nej.png

865 ms

section-header-imp.png

section-header-imp.png

866 ms

i-novefotky.png

i-novefotky.png

870 ms

more.gif

more.gif

963 ms

da9b8d2c9df3d1a80cd88fc6352aeb76.gif

da9b8d2c9df3d1a80cd88fc6352aeb76.gif

438 ms

lg.php

lg.php

244 ms

section-header-column.png

section-header-column.png

1055 ms

out.gif

out.gif

1076 ms

footer.png

footer.png

1077 ms

footer-illustration.png

footer-illustration.png

1078 ms

out-footer.gif

out-footer.gif

1082 ms

loadingAnimation.gif

loadingAnimation.gif

1164 ms

Accessibility Review

skolnistranky.cz accessibility score

84

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

skolnistranky.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

SEO Factors

skolnistranky.cz SEO score

69

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

High

robots.txt is not valid

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 doesn't use legible font sizes

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 Skolnistranky.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 Skolnistranky.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

skolnistranky.cz

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