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codn.edu.pl screenshot

Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

codn.edu.pl

Codn.edu.pl |

Page Load Speed

3.6 sec in total

First Response

356 ms

Resources Loaded

3.1 sec

Page Rendered

196 ms

codn.edu.pl screenshot

About Website

Welcome to codn.edu.pl homepage info - get ready to check Codn best content right away, or after learning these important things about codn.edu.pl

Visit codn.edu.pl

Key Findings

We analyzed Codn.edu.pl page load time and found that the first response time was 356 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

codn.edu.pl performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

26/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

23/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value5.4 s

71/100

10%

Network Requests Diagram

codn.edu.pl

356 ms

www.codn.edu.pl

1087 ms

css

28 ms

css

27 ms

mediaelementplayer-legacy.min.css

114 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 61% of them (20 requests) were addressed to the original Codn.edu.pl, 33% (11 requests) were made to Fonts.gstatic.com and 6% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Codn.edu.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 195.7 kB (41%)

Content Size

473.7 kB

After Optimization

278.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Codn.edu.pl main page is 473.7 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. 35% of websites need less resources to load. Javascripts take 183.9 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 155.4 kB

  • Original 183.5 kB
  • After minification 181.1 kB
  • After compression 28.1 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 155.4 kB or 85% of the original size.

Image Optimization

-4%

Potential reduce by 3.5 kB

  • Original 82.6 kB
  • After minification 79.1 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. Codn images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 31.7 kB

  • Original 183.9 kB
  • After minification 183.9 kB
  • After compression 152.2 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 31.7 kB or 17% of the original size.

CSS Optimization

-21%

Potential reduce by 5.0 kB

  • Original 23.6 kB
  • After minification 23.6 kB
  • After compression 18.7 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. Codn.edu.pl needs all CSS files to be minified and compressed as it can save up to 5.0 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (68%)

Requests Now

19

After Optimization

6

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Codn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

codn.edu.pl

codn.edu.pl

356 ms

www.codn.edu.pl

www.codn.edu.pl

1087 ms

css

css

28 ms

css

css

27 ms

mediaelementplayer-legacy.min.css

mediaelementplayer-legacy.min.css

114 ms

wp-mediaelement.min.css

wp-mediaelement.min.css

225 ms

jquery.min.js

jquery.min.js

442 ms

jquery-migrate.min.js

jquery-migrate.min.js

322 ms

scripts.min.js

scripts.min.js

551 ms

jquery.fitvids.js

jquery.fitvids.js

337 ms

easypiechart.js

easypiechart.js

335 ms

salvattore.js

salvattore.js

348 ms

common.js

common.js

454 ms

mediaelement-and-player.min.js

mediaelement-and-player.min.js

591 ms

mediaelement-migrate.min.js

mediaelement-migrate.min.js

454 ms

wp-mediaelement.min.js

wp-mediaelement.min.js

462 ms

codn.png

codn.png

544 ms

high-school_26.png

high-school_26.png

590 ms

high-school_35.jpg

high-school_35.jpg

751 ms

high-school_50.png

high-school_50.png

567 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

20 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

25 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

31 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

34 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

38 ms

KFOlCnqEu92Fr1MmEU9fChc9.ttf

KFOlCnqEu92Fr1MmEU9fChc9.ttf

6 ms

KFOmCnqEu92Fr1Mu7GxP.ttf

KFOmCnqEu92Fr1Mu7GxP.ttf

9 ms

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KFOlCnqEu92Fr1MmSU5fChc9.ttf

6 ms

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KFOkCnqEu92Fr1MmgVxGIzc.ttf

8 ms

KFOlCnqEu92Fr1MmWUlfChc9.ttf

KFOlCnqEu92Fr1MmWUlfChc9.ttf

16 ms

KFOlCnqEu92Fr1MmYUtfChc9.ttf

KFOlCnqEu92Fr1MmYUtfChc9.ttf

15 ms

modules.woff

modules.woff

395 ms

style.min.css

style.min.css

113 ms

Accessibility Review

codn.edu.pl accessibility score

79

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

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

codn.edu.pl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

codn.edu.pl SEO score

93

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

    PL

  • Language Claimed

    PL

  • Encoding

    UTF-8

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

codn.edu.pl

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