AlexaWhoisServer InformationDesktop SpeedMobile SpeedMobile UsabilityHTML ErrorsPingTraceroute

OI.EDU.PL Website Information

oi.edu.pl Website Information

Daily Unique Visits: 916

Daily Page Views: 1,832

Income Per Day: $6

Estimated Value: $1,440

oi.edu.pl is registered under .PL top-level domain. Please check other sites in .PL zone.

No name server records were found.

and is probably hosted by University of Warsaw. See the full list of other websites hosted by University of Warsaw.

The highest website oi.edu.pl position in Alexa rank database was 14848 and the lowest rank position was 993763. Current position of oi.edu.pl in Alexa rank database is 782691.

Desktop speed score of oi.edu.pl (74/100) is better than the results of 57.94% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of oi.edu.pl (62/100) is better than the results of 7.29% of other sites and means that the page is not mobile-friendly.

Mobile speed score of oi.edu.pl (60/100) is better than the results of 54.7% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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oi.edu.pl Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

oi.edu.pl whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

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oi.edu.pl server information

Servers Location

oi.edu.pl desktop page speed rank

Last tested: 2019-11-06

Desktop Speed Medium
74/100

oi.edu.pl Desktop Speed Test Quick Summary


priority - 10Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://oi.edu.pl/static/attachment/20130924/men_fri_1.png (expiration not specified)
http://oi.edu.pl/static/css/layout.css (expiration not specified)
http://oi.edu.pl/static/css/layoutSmall.css (expiration not specified)
http://oi.edu.pl/static/images/IIIT_logo_male.png (expiration not specified)
http://oi.edu.pl/static/images/codility1.gif (expiration not specified)
http://oi.edu.pl/static/images/jane_street1.png (expiration not specified)
http://oi.edu.pl/static/images/logo_asseco_poland.png (expiration not specified)
http://oi.edu.pl/static/images/logo_atende.png (expiration not specified)
http://oi.edu.pl/static/images/logo_fri_kolor_150.png (expiration not specified)
http://oi.edu.pl/static/images/logo_men.png (expiration not specified)
http://oi.edu.pl/static/images/logo_oeiizk.jpg (expiration not specified)
http://oi.edu.pl/static/images/logo_pti_120.gif (expiration not specified)
http://oi.edu.pl/static/images/logo_stare.jpg (expiration not specified)
http://oi.edu.pl/static/images/pwn-logo.gif (expiration not specified)
http://oi.edu.pl/static/images/shadow.jpg (expiration not specified)
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.css (expiration not specified)
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.pack.js (expiration not specified)
http://oi.edu.pl/static/js/fancybox/jquery.mousewheel-3.0.4.pack.js (expiration not specified)
http://oi.edu.pl/static/js/jquery.min.js (expiration not specified)
http://connect.facebook.net/en_US/all.js (20 minutes)
http://www.google-analytics.com/ga.js (2 hours)

priority - 10Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 4 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://oi.edu.pl/static/js/jquery.min.js
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.pack.js
http://oi.edu.pl/static/js/fancybox/jquery.easing-1.4.pack.js
http://oi.edu.pl/static/js/fancybox/jquery.mousewheel-3.0.4.pack.js

Optimize CSS Delivery of the following:

http://fonts.googleapis.com/css?family=Cousine:regular,bold
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.css
http://oi.edu.pl/static/css/layout.css
http://oi.edu.pl/static/css/layoutSmall.css

priority - 6Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 60.7KiB (65% reduction).

Compressing http://oi.edu.pl/static/js/jquery.min.js could save 50.3KiB (65% reduction).
Compressing http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.pack.js could save 9.8KiB (64% reduction).
Compressing http://oi.edu.pl/static/js/fancybox/jquery.mousewheel-3.0.4.pack.js could save 602B (48% reduction).

priority - 4Reduce server response time

priority - 4Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 34.1KiB (62% reduction).

Compressing and resizing http://oi.edu.pl/static/images/logo_atende.png could save 21KiB (93% reduction).
Compressing http://oi.edu.pl/static/images/logo_stare.jpg could save 7KiB (55% reduction).
Compressing http://oi.edu.pl/static/images/logo_asseco_poland.png could save 2.6KiB (35% reduction).
Compressing http://oi.edu.pl/static/images/logo_oeiizk.jpg could save 1.7KiB (53% reduction).
Compressing http://oi.edu.pl/static/images/logo_fri_kolor_150.png could save 911B (13% reduction).
Compressing http://oi.edu.pl/static/images/codility1.gif could save 884B (59% reduction).

oi.edu.pl Desktop Resource Breakdown

Total Resources31
Number of Hosts7
Static Resources24
JavaScript Resources6
CSS Resources4

oi.edu.pl mobile page speed rank

Last tested: 2017-06-02

Mobile Speed Bad
60/100

oi.edu.pl Mobile Speed Test Quick Summary


priority - 40Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 4 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://oi.edu.pl/static/js/jquery.min.js
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.pack.js
http://oi.edu.pl/static/js/fancybox/jquery.easing-1.4.pack.js
http://oi.edu.pl/static/js/fancybox/jquery.mousewheel-3.0.4.pack.js

Optimize CSS Delivery of the following:

http://fonts.googleapis.com/css?family=Cousine:regular,bold
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.css
http://oi.edu.pl/static/css/layout.css
http://oi.edu.pl/static/css/layoutSmall.css

priority - 16Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://oi.edu.pl/static/attachment/20130924/men_fri_1.png (expiration not specified)
http://oi.edu.pl/static/attachment/20170502/182221…1612891291895107_n.jpg (expiration not specified)
http://oi.edu.pl/static/css/layout.css (expiration not specified)
http://oi.edu.pl/static/css/layoutSmall.css (expiration not specified)
http://oi.edu.pl/static/images/IIIT_logo_male.png (expiration not specified)
http://oi.edu.pl/static/images/codility1.gif (expiration not specified)
http://oi.edu.pl/static/images/jane_street1.png (expiration not specified)
http://oi.edu.pl/static/images/logo_asseco_poland.png (expiration not specified)
http://oi.edu.pl/static/images/logo_atende.png (expiration not specified)
http://oi.edu.pl/static/images/logo_fri_kolor_150.png (expiration not specified)
http://oi.edu.pl/static/images/logo_men.png (expiration not specified)
http://oi.edu.pl/static/images/logo_oeiizk.jpg (expiration not specified)
http://oi.edu.pl/static/images/logo_pti_120.gif (expiration not specified)
http://oi.edu.pl/static/images/logo_stare.jpg (expiration not specified)
http://oi.edu.pl/static/images/pwn-logo.gif (expiration not specified)
http://oi.edu.pl/static/images/shadow.jpg (expiration not specified)
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.css (expiration not specified)
http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.pack.js (expiration not specified)
http://oi.edu.pl/static/js/fancybox/jquery.mousewheel-3.0.4.pack.js (expiration not specified)
http://oi.edu.pl/static/js/jquery.min.js (expiration not specified)
http://connect.facebook.net/en_US/all.js (20 minutes)
http://www.google-analytics.com/ga.js (2 hours)

priority - 6Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 60.7KiB (65% reduction).

Compressing http://oi.edu.pl/static/js/jquery.min.js could save 50.3KiB (65% reduction).
Compressing http://oi.edu.pl/static/js/fancybox/jquery.fancybox-1.3.4.pack.js could save 9.8KiB (64% reduction).
Compressing http://oi.edu.pl/static/js/fancybox/jquery.mousewheel-3.0.4.pack.js could save 602B (48% reduction).

priority - 5Reduce server response time

priority - 4Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 34.1KiB (62% reduction).

Compressing and resizing http://oi.edu.pl/static/images/logo_atende.png could save 21KiB (93% reduction).
Compressing http://oi.edu.pl/static/images/logo_stare.jpg could save 7KiB (55% reduction).
Compressing http://oi.edu.pl/static/images/logo_asseco_poland.png could save 2.6KiB (35% reduction).
Compressing http://oi.edu.pl/static/images/logo_oeiizk.jpg could save 1.7KiB (53% reduction).
Compressing http://oi.edu.pl/static/images/logo_fri_kolor_150.png could save 911B (13% reduction).
Compressing http://oi.edu.pl/static/images/codility1.gif could save 884B (59% reduction).

oi.edu.pl Mobile Resource Breakdown

Total Resources32
Number of Hosts7
Static Resources25
JavaScript Resources6
CSS Resources4

oi.edu.pl mobile page usability

Last tested: 2017-06-02

Mobile Usability Bad
62/100

oi.edu.pl Mobile Usability Test Quick Summary


priority - 40Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

rok_szkolny(2016,2017); renders only 5 pixels tall (14 CSS pixels).

edycja_OI(24); renders only 5 pixels tall (14 CSS pixels).

BOI(2017) and 1 others render only 5 pixels tall (12 CSS pixels).

ONTAK(2017) and 1 others render only 5 pixels tall (12 CSS pixels).

=============================> and 2 others render only 5 pixels tall (12 CSS pixels).

= and 19 others render only 5 pixels tall (12 CSS pixels).

. and 20 others render only 5 pixels tall (12 CSS pixels).

. and 18 others render only 5 pixels tall (12 CSS pixels).

Aktualności and 1 others render only 5 pixels tall (14 CSS pixels).

Jak zacząć? (FAQ) and 15 others render only 5 pixels tall (14 CSS pixels).

Like renders only 4 pixels tall (11 CSS pixels).

to see what your friends like. and 1 others render only 4 pixels tall (11 CSS pixels).

Sign Up renders only 4 pixels tall (11 CSS pixels).

Współorganizatorzy renders only 5 pixels tall (12 CSS pixels).

/* Instytucje wspierające */ and 3 others render only 5 pixels tall (12 CSS pixels).

Trzy złota i t…Polaków na BOI and 9 others render only 5 pixels tall (12 CSS pixels).

2017-05-02 Jakub Radoszewski and 13 others render only 4 pixels tall (11 CSS pixels).

XXIV OI and 6 others render only 4 pixels tall (11 CSS pixels).

W dniach 25-30…dgimnazjalnej. and 15 others render only 5 pixels tall (12 CSS pixels).

Stanisław Strzelecki and 5 others render only 5 pixels tall (12 CSS pixels).

Zawodnicy pozn…ne zgłoszenia. and 7 others render only 5 pixels tall (12 CSS pixels).

wyniki zawodów…Informatycznej and 3 others render only 5 pixels tall (12 CSS pixels).

Ustalenia tech…OI (140.0 KB) and 5 others render only 5 pixels tall (12 CSS pixels).

strona 1 z 3 renders only 5 pixels tall (12 CSS pixels).
następne renders only 5 pixels tall (12 CSS pixels).
Olimpiada Info…tyczna, OEIiZK renders only 5 pixels tall (14 CSS pixels).
ul. Nowogrodzka 73 and 3 others render only 4 pixels tall (11 CSS pixels).
olimpiada@oi.edu.pl renders only 4 pixels tall (11 CSS pixels).
Uniwersytet Warszawski and 1 others render only 4 pixels tall (11 CSS pixels).

priority - 13Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="/l/185/">XXIV OI</a> and 1 others are close to other tap targets.

The tap target <a href="/l/24oi_3etap_wyniki/">Wyniki III etapu</a> and 15 others are close to other tap targets.

The tap target <form id="u_0_1">Like</form> is close to 1 other tap targets.

The tap target <button id="u_0_4" type="submit" class="inlineBlock _2tga _49ve">Like</button> is close to 1 other tap targets.

The tap target <a href="http://www.atende.pl"></a> and 1 others are close to other tap targets.

The tap target <a href="../../../../co…riusz%20Trela/">Mariusz Trela</a> and 5 others are close to other tap targets.

The tap target <a href="/static/attach…/24OI_plan.pdf">Plan zawodów I…OI (151.5 KB)</a> and 4 others are close to other tap targets.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

oi.edu.pl HTML validation

Errors

The “align” attribute on the “p” element is obsolete. Use CSS instead.

Line: 857 Column: 9 - 26
"...> <p align="center"><b>/* ..." Line: 860 Column: 9 - 26
"...> <p align="center"><a hre..." Line: 861 Column: 9 - 26
"...> <p align="center"><b>/* ..." Line: 862 Column: 9 - 26
"...> <p align="center"><a hre..." Line: 863 Column: 9 - 26
"...> <p align="center"><a hre..." Line: 864 Column: 9 - 26
"...> <p align="center"><b>/* ..." Line: 865 Column: 9 - 26
"...> <p align="center"><a hre..." Line: 866 Column: 9 - 26
"...> <p align="center"><a hre..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 895 Column: 8 - 84
"..."> <p><img src="../../../../static/attachment/20130924/men_fri_1.png" border="0" /></p> ..."

Warnings

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 895 Column: 8 - 84
"..."> <p><img src="../../../../static/attachment/20130924/men_fri_1.png" border="0" /></p> ..."

This document appears to be written in Polish. Consider adding “lang="pl"” (or variant) to the “html” start tag.

Line: 2 Column: 16 - 6
"...TYPE html> <html> <he..."

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oi.edu.pl Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

oi.edu.pl TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.