Tools & Wizards About Us
rk.edu.pl screenshot

Report Summary

  • 90

    Performance

    Renders faster than
    91% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

rk.edu.pl

RkBlog :: Hardware, programming and astronomy

Page Load Speed

3.1 sec in total

First Response

698 ms

Resources Loaded

2 sec

Page Rendered

377 ms

rk.edu.pl screenshot

About Website

Visit rk.edu.pl now to see the best up-to-date Rk content for Poland and also check out these interesting facts you probably never knew about rk.edu.pl

Hardware, programming and astronomy tutorials and reviews.

Visit rk.edu.pl

Key Findings

We analyzed Rk.edu.pl page load time and found that the first response time was 698 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

rk.edu.pl performance score

90

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

70/100

25%

SI (Speed Index)

Value2.4 s

98/100

10%

TBT (Total Blocking Time)

Value140 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value3.2 s

95/100

10%

Network Requests Diagram

rk.edu.pl

698 ms

styles.css

112 ms

js

68 ms

scripts.js

213 ms

home.svg

214 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 95% of them (19 requests) were addressed to the original Rk.edu.pl, 5% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Rk.edu.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 134.2 kB (14%)

Content Size

938.4 kB

After Optimization

804.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rk.edu.pl main page is 938.4 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. 25% of websites need less resources to load. Images take 922.2 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 9.9 kB

  • Original 13.2 kB
  • After minification 11.3 kB
  • After compression 3.3 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 1.8 kB, which is 14% 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 9.9 kB or 75% of the original size.

Image Optimization

-13%

Potential reduce by 124.1 kB

  • Original 922.2 kB
  • After minification 798.1 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. Obviously, Rk needs image optimization as it can save up to 124.1 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-13%

Potential reduce by 52 B

  • Original 403 B
  • After minification 403 B
  • After compression 351 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 52 B or 13% of the original size.

CSS Optimization

-8%

Potential reduce by 206 B

  • Original 2.6 kB
  • After minification 2.6 kB
  • After compression 2.4 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. Rk.edu.pl has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

17

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rk. According to our analytics all requests are already optimized.

Network Requests Diagram

rk.edu.pl

rk.edu.pl

698 ms

styles.css

styles.css

112 ms

js

js

68 ms

scripts.js

scripts.js

213 ms

home.svg

home.svg

214 ms

search.svg

search.svg

215 ms

rss.svg

rss.svg

219 ms

contact.svg

contact.svg

221 ms

cover_arc_pMp1QxC.jpg

cover_arc_pMp1QxC.jpg

338 ms

QFSfEPImlC-800.webp

QFSfEPImlC-800.webp

381 ms

cover_wio.jpg

cover_wio.jpg

277 ms

stripe_tests1.jpg

stripe_tests1.jpg

740 ms

cover_geiger.jpg

cover_geiger.jpg

285 ms

baseus_4.jpg

baseus_4.jpg

609 ms

bresser.jpg

bresser.jpg

489 ms

ngrok.png

ngrok.png

505 ms

cover_omegon.jpg

cover_omegon.jpg

454 ms

carbon_code.png

carbon_code.png

905 ms

JosefinSans-VariableFont_wght.ttf

JosefinSans-VariableFont_wght.ttf

764 ms

WorkSans-VariableFont_wght.ttf

WorkSans-VariableFont_wght.ttf

1091 ms

Accessibility Review

rk.edu.pl accessibility score

100

Accessibility Issues

Best Practices

rk.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

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

rk.edu.pl 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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

rk.edu.pl

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