Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

porg.cz

PORG | Gymnázium a základní škola, Praha, Ostrava, Brno

Page Load Speed

4.4 sec in total

First Response

318 ms

Resources Loaded

3.8 sec

Page Rendered

274 ms

porg.cz screenshot

About Website

Visit porg.cz now to see the best up-to-date PORG content for Czech Republic and also check out these interesting facts you probably never knew about porg.cz

Naše jedinečná koncepce spojuje vynikající akademické výsledky s přátelským prostředím. Praha, Ostrava i Brno jsou města, kde najdete PORG školy.

Visit porg.cz

Key Findings

We analyzed Porg.cz page load time and found that the first response time was 318 ms and then it took 4.1 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

porg.cz performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value13.8 s

0/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value5,080 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.463

19/100

15%

TTI (Time to Interactive)

Value12.2 s

15/100

10%

Network Requests Diagram

porg.cz

318 ms

www.porg.cz

1345 ms

jquery.min.js

224 ms

elektra.css

203 ms

css

25 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 84% of them (58 requests) were addressed to the original Porg.cz, 3% (2 requests) were made to Google-analytics.com and 3% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Porg.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 498.2 kB (20%)

Content Size

2.4 MB

After Optimization

1.9 MB

In fact, the total size of Porg.cz main page is 2.4 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. 40% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 26.6 kB

  • Original 35.1 kB
  • After minification 28.7 kB
  • After compression 8.5 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. This page needs HTML code to be minified as it can gain 6.4 kB, which is 18% 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 26.6 kB or 76% of the original size.

Image Optimization

-2%

Potential reduce by 40.7 kB

  • Original 1.8 MB
  • After minification 1.8 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. PORG images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 356.4 kB

  • Original 515.4 kB
  • After minification 504.3 kB
  • After compression 159.1 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 356.4 kB or 69% of the original size.

CSS Optimization

-85%

Potential reduce by 74.5 kB

  • Original 87.3 kB
  • After minification 72.5 kB
  • After compression 12.8 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. Porg.cz needs all CSS files to be minified and compressed as it can save up to 74.5 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (55%)

Requests Now

64

After Optimization

29

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of PORG. 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 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

porg.cz accessibility score

68

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

Form elements do not have associated labels

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

porg.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

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

porg.cz SEO score

100

Search Engine Optimization Advices

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 uses 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 Porg.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 Porg.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

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