Tools & Wizards About Us
operon.pl screenshot

Report Summary

  • 5

    Performance

    Renders faster than
    20% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

operon.pl

Wydawnictwo Pedagogiczne OPERON sp z o.o

Page Load Speed

4 sec in total

First Response

563 ms

Resources Loaded

3.1 sec

Page Rendered

330 ms

operon.pl screenshot

About Website

Click here to check amazing OPERON content for Poland. Otherwise, check out these important facts you probably never knew about operon.pl

Wydawnictwo Pedagogiczne Operon

Visit operon.pl

Key Findings

We analyzed Operon.pl page load time and found that the first response time was 563 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

operon.pl performance score

5

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value16.2 s

0/100

25%

SI (Speed Index)

Value17.1 s

0/100

10%

TBT (Total Blocking Time)

Value1,670 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.763

5/100

15%

TTI (Time to Interactive)

Value14.6 s

8/100

10%

Network Requests Diagram

www.operon.pl

563 ms

74ab2a3.css

440 ms

17b5efe.js

545 ms

ga.js

37 ms

logo.png

150 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 81% of them (30 requests) were addressed to the original Operon.pl, 5% (2 requests) were made to Google-analytics.com and 5% (2 requests) were made to Facebook.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Operon.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (66%)

Content Size

2.2 MB

After Optimization

765.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Operon.pl main page is 2.2 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. 45% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-93%

Potential reduce by 181.3 kB

  • Original 194.9 kB
  • After minification 84.8 kB
  • After compression 13.5 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 110.1 kB, which is 56% 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 181.3 kB or 93% of the original size.

Image Optimization

-52%

Potential reduce by 649.9 kB

  • Original 1.2 MB
  • After minification 598.9 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, OPERON needs image optimization as it can save up to 649.9 kB or 52% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 246.5 kB

  • Original 353.5 kB
  • After minification 294.5 kB
  • After compression 107.0 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 246.5 kB or 70% of the original size.

CSS Optimization

-89%

Potential reduce by 390.3 kB

  • Original 436.9 kB
  • After minification 274.7 kB
  • After compression 46.6 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. Operon.pl needs all CSS files to be minified and compressed as it can save up to 390.3 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (10%)

Requests Now

31

After Optimization

28

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OPERON. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.operon.pl

www.operon.pl

563 ms

74ab2a3.css

74ab2a3.css

440 ms

17b5efe.js

17b5efe.js

545 ms

ga.js

ga.js

37 ms

logo.png

logo.png

150 ms

logo-small.png

logo-small.png

148 ms

Sprawdzian-szostoklasisty-2016_box_offer_item_lg.png

Sprawdzian-szostoklasisty-2016_box_offer_item_lg.png

778 ms

Matura-2016_box_offer_item_lg.png

Matura-2016_box_offer_item_lg.png

656 ms

Egzamin-gimnazjalny-2016_box_offer_item_lg.png

Egzamin-gimnazjalny-2016_box_offer_item_lg.png

871 ms

Zamowienia.png

Zamowienia.png

225 ms

Dotacje-MEN.png

Dotacje-MEN.png

226 ms

Oswiata-i-prawo.png

Oswiata-i-prawo.png

227 ms

Ja-czytam.png

Ja-czytam.png

336 ms

Deklaracje.png

Deklaracje.png

336 ms

Kursy-internetowe.png

Kursy-internetowe.png

340 ms

Multiteka.png

Multiteka.png

447 ms

Generator-testow.png

Generator-testow.png

447 ms

Ortograffiti.png

Ortograffiti.png

566 ms

Egzaminy-z-Operonem.png

Egzaminy-z-Operonem.png

558 ms

NOE.png

NOE.png

558 ms

Gram-i-zdam.png

Gram-i-zdam.png

669 ms

Gielda-Maturalna.png

Gielda-Maturalna.png

670 ms

Gielda-gimnazjalna.png

Gielda-gimnazjalna.png

680 ms

Wyniki-uczniow.png

Wyniki-uczniow.png

762 ms

fbds.js

fbds.js

140 ms

sprite-ie8.png

sprite-ie8.png

753 ms

newsletter-bg.png

newsletter-bg.png

1532 ms

facebook-50-white.png

facebook-50-white.png

765 ms

roboto-light.woff

roboto-light.woff

726 ms

roboto-medium.woff

roboto-medium.woff

741 ms

themixosf-light.woff

themixosf-light.woff

859 ms

themixosf-semibold.woff

themixosf-semibold.woff

883 ms

__utm.gif

__utm.gif

23 ms

27 ms

collect

collect

55 ms

nr-768.min.js

nr-768.min.js

47 ms

3 ms

Accessibility Review

operon.pl accessibility score

92

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

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

Best Practices

operon.pl best practices score

75

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

operon.pl SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Operon.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 Operon.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

operon.pl

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