Report Summary

  • 96

    Performance

    Renders faster than
    94% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 63% of websites

  • 85

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

oi.edu.pl

Olimpiada Informatyczna

Page Load Speed

3.8 sec in total

First Response

948 ms

Resources Loaded

2.6 sec

Page Rendered

232 ms

oi.edu.pl screenshot

About Website

Welcome to oi.edu.pl homepage info - get ready to check Oi best content for Poland right away, or after learning these important things about oi.edu.pl

Visit oi.edu.pl

Key Findings

We analyzed Oi.edu.pl page load time and found that the first response time was 948 ms and then it took 2.9 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

oi.edu.pl performance score

96

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value2.1 s

99/100

10%

Network Requests Diagram

oi.edu.pl

948 ms

css

26 ms

jquery.fancybox-1.3.4.css

109 ms

layout.css

216 ms

jquery.min.js

531 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 69% of them (20 requests) were addressed to the original Oi.edu.pl, 7% (2 requests) were made to Google-analytics.com and 7% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Oi.edu.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 111.1 kB (45%)

Content Size

244.7 kB

After Optimization

133.6 kB

In fact, the total size of Oi.edu.pl main page is 244.7 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. 25% of websites need less resources to load. Javascripts take 112.7 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 21.6 kB

  • Original 28.5 kB
  • After minification 26.0 kB
  • After compression 6.9 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 21.6 kB or 76% of the original size.

Image Optimization

-5%

Potential reduce by 3.8 kB

  • Original 77.3 kB
  • After minification 73.4 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. Oi images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 62.6 kB

  • Original 112.7 kB
  • After minification 112.2 kB
  • After compression 50.1 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 62.6 kB or 56% of the original size.

CSS Optimization

-88%

Potential reduce by 23.0 kB

  • Original 26.3 kB
  • After minification 14.4 kB
  • After compression 3.2 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. Oi.edu.pl needs all CSS files to be minified and compressed as it can save up to 23.0 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (28%)

Requests Now

25

After Optimization

18

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

oi.edu.pl accessibility score

86

Accessibility Issues

Internationalization and localization

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

Impact

Issue

High

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

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

Image elements do not have [alt] attributes

Best Practices

oi.edu.pl best practices score

85

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

SEO Factors

oi.edu.pl SEO score

58

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

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 Oi.edu.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 Oi.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

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