Access experymentarium.pl. Strona Główna

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

15/100

25%

SI (Speed Index)

Value11.9 s

4/100

10%

TBT (Total Blocking Time)

Value1,120 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value0.244

51/100

15%

TTI (Time to Interactive)

Value48.4 s

0/100

10%

experymentarium.pl

1964 ms

wp-emoji-release.min.js

143 ms

shadowbox.css

1030 ms

extras.css

241 ms

alo-easymail.css

244 ms

Our browser made a total of 108 requests to load all elements on the main page. We found that 52% of them (56 requests) were addressed to the original Experymentarium.pl, 21% (23 requests) were made to Static.xx.fbcdn.net and 16% (17 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Experymentarium.pl.

Content Size

13.4 MB

After Optimization

12.3 MB

In fact, the total size of Experymentarium.pl main page is 13.4 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. 70% of websites need less resources to load. Images take 12.6 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 30.9 kB

Original 40.3 kB
After minification 35.7 kB
After compression 9.4 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 4.6 kB, which is 11% 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 30.9 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 446.1 kB

Original 12.6 MB
After minification 12.1 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. Experymentarium images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 324.1 kB

Original 490.3 kB
After minification 482.6 kB
After compression 166.2 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 324.1 kB or 66% of the original size.

CSS Optimization

-84%

Potential reduce by 283.6 kB

Original 339.0 kB
After minification 320.1 kB
After compression 55.4 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. Experymentarium.pl needs all CSS files to be minified and compressed as it can save up to 283.6 kB or 84% of the original size.

Requests Now

106

After Optimization

The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Experymentarium. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 21 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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

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

High

Image elements do not have [alt] attributes

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

PL
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Experymentarium.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish is used on the page, and it does not match the claimed English language. Our system also found out that Experymentarium.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

experymentarium.pl

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

Strona Główna - Experymentarium

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

experymentarium.pl

wp-emoji-release.min.js

shadowbox.css

extras.css

alo-easymail.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

experymentarium.pl

wp-emoji-release.min.js

shadowbox.css

extras.css

alo-easymail.css

easingslider.min.css

youtube_simplegallery.css

jquery.js

jquery-migrate.min.js

jquery.easingslider.min.js

swfobject.js

tw-sack.min.js

swfobject.js

header-2.css

header-2.js

jquery.prettyphoto.js

musli.js

prettyphoto.css

global.css

style.css

sidebars.css

comments.css

black.css

home-1.css

message-1.css

slider-3.css

jquery.easing.js

slider-3.js

main.js

seo.css

ab894337c3b83f3572a7714c3eee3b04.js

uk-cookie-consent-js.js

facebook.png

flaga_polska.png

flaga_brytania.png

logo.png

RETROKOMPUTERY-BANER-EXP.png

baner-exp-13.033.png

baner-ape-exp.png

urodziny-baner.png

BANER.gif

warsztaty_baner_exp.png

baner-5z%C5%82-taniejexp.png