Access zsunesco.cz. Základní škola UNESCO Uherské Hradiště

Report Summary

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

44/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

73/100

25%

SI (Speed Index)

Value4.1 s

78/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.109

87/100

15%

TTI (Time to Interactive)

Value4.5 s

83/100

10%

zsunesco.cz

385 ms

zsunesco.cz

617 ms

bootstrap.min.css

211 ms

owl.carousel.min.css

293 ms

owl.theme.default.min.css

298 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 71% of them (55 requests) were addressed to the original Zsunesco.cz, 22% (17 requests) were made to Fonts.gstatic.com and 5% (4 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Zsunesco.cz.

Content Size

3.5 MB

After Optimization

3.3 MB

In fact, the total size of Zsunesco.cz main page is 3.5 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.3 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 40.9 kB

Original 46.3 kB
After minification 30.0 kB
After compression 5.4 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. This page needs HTML code to be minified as it can gain 16.3 kB, which is 35% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 40.9 kB or 88% of the original size.

Image Optimization

-4%

Potential reduce by 122.7 kB

Original 3.3 MB
After minification 3.2 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. Zs UNESCO images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 372 B

Original 119.5 kB
After minification 119.5 kB
After compression 119.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 1.2 kB

Original 31.7 kB
After minification 31.7 kB
After compression 30.5 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. Zsunesco.cz has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zs UNESCO. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

ARIA IDs are not unique

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.

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

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/).

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 Zsunesco.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 Zsunesco.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

zsunesco.cz

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Základní škola UNESCO Uherské Hradiště | ZŠ UNESCO

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

zsunesco.cz

zsunesco.cz

bootstrap.min.css

owl.carousel.min.css

owl.theme.default.min.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

zsunesco.cz

zsunesco.cz

bootstrap.min.css

owl.carousel.min.css

owl.theme.default.min.css

jquery.fancybox.min.css

style.css

custom.css

logo.svg

menu-mobile.svg

lupa.svg

h-unesco.png

h-cam.png

arrow-whitegrey.svg

header.jpg

about.png

ico-peda.svg

ico-jazyky.svg

ico-zaci.svg

ico-zaci-cam.svg

2534_47155_th.jpg

2532_47114_th.png

2533_47154_th.jpg

2527_47063_th.jpg

jquery-3.5.1.js

jquery.fancybox.min.js

popper.min.js

bootstrap.min.js

owl.carousel.min.js

javascript.js

2528_47066_th.png

2530_47071_th.jpg

2531_47107_th.jpg

2522_47036_th.jpg

1.jpg

2.png

3.jpg

9.png

8.png

11.png

10.png

map.png

fb.svg