Access kangur-mat.pl. Kangur Matematyczny

Report Summary

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value4.3 s

42/100

25%

SI (Speed Index)

Value2.7 s

96/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value3.6 s

91/100

10%

kangur-mat.pl

343 ms

555 ms

js

57 ms

menu.css

327 ms

main.css

327 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 93% of them (13 requests) were addressed to the original Kangur-mat.pl, 7% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (756 ms) belongs to the original domain Kangur-mat.pl.

Content Size

54.9 kB

After Optimization

43.2 kB

In fact, the total size of Kangur-mat.pl main page is 54.9 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. Only 10% of websites need less resources to load. Images take 37.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 11.0 kB

Original 14.7 kB
After minification 12.1 kB
After compression 3.7 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 2.6 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 11.0 kB or 75% of the original size.

Image Optimization

-1%

Potential reduce by 305 B

Original 37.9 kB
After minification 37.6 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. Kangur Mat images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 36 B

Original 199 B
After minification 199 B
After compression 163 B

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 36 B or 18% of the original size.

CSS Optimization

-17%

Potential reduce by 373 B

Original 2.1 kB
After minification 2.1 kB
After compression 1.8 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. Kangur-mat.pl needs all CSS files to be minified and compressed as it can save up to 373 B or 17% of the original size.

Requests Now

After Optimization

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kangur Mat. According to our analytics all requests are already optimized.

Accessibility Issues

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

robots.txt is not valid

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

PL
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kangur-mat.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Kangur-mat.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

Open Graph description is not detected on the main page of Kangur Mat. 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

Kangur Matematyczny

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

kangur-mat.pl

js

menu.css

main.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

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Accessibility Review

Accessibility Issues

Best Practices

Areas of Improvement

SEO Factors

Search Engine Optimization Advices

Language and Encoding

Language Detected

Language Claimed

Encoding

Social Sharing Optimization

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