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o2.sk: O2 | Mobilné telefóny, internet a volacie programy

Férový operátor O2 Slovensko. Vyberte si z ponuky výhodných volaní, dátových balíčkov, mobilných telefónov a tabletov v O2 E-shope. Kontrola spotreby, faktúry, dobíjanie kreditu a aktivácia balíčkov v...

Page load speed analysis

  • 54/100

    Normal result
  • 5

    Successful tests
  • 3

    Failed tests
  • First response

    350 ms

  • Resources loaded

    3.8 sec

  • Page rendered

    214 ms

  • Total page load time

    4.4 sec

Visit o2.sk now to see the best up-to-date O2 content for Slovakia and also check out these interesting facts you probably never knew about o2.sk

We analyzed O2.sk page load time and found that the first response time was 350 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Page optimization

  • HTML 104.9 kB
    Images 286.6 kB
    Javascripts 532.6 kB
    CSS 0 B

    In fact, the total size of O2.sk main page is 924.1 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. 65% of websites need less resources to load. Javascripts take 532.6 kB which makes up the majority of the site volume.

    • Original 104.9 kB
    • After minification 104.5 kB
    • After compression 21.9 kB

    HTML optimization

    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 83.0 kB or 79% of the original size.

    • Original 286.6 kB
    • After optimization 284.3 kB

    Image optimization

    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. O2 images are well optimized though.

    • Original 532.6 kB
    • After minification 519.2 kB
    • After compression 163.6 kB

    JavaScript optimization

    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 369.0 kB or 69% of the original size.

Network requests diagram

  • o2.sk
  • www.o2.sk
  • portal,_css.jsp,qbrowserId==ie,athemeId==mojeO2_WAR_liferaytheme,acolorSchemeId==01,aminifierType==css,alanguageId==sk_SK,ab==6011,at==1456271062000+portlet,_journal_content,_css,_main.jsp,qbrowserId==ie,athemeId==mojeO2_WAR_liferaytheme,acolorSchemeId==01,aminifierType==css,alanguageId==sk_SK,ab==6011,at==1456269849000.pagespeed.cc.bENNAQPQFx.css
  • A.main.css,qbrowserId=ie,aminifierType=css,alanguageId=sk_SK,ab=6011,at=1456271062000.pagespeed.cf.1B2M2Y8Asg.css
  • A.liferay.css+layout.css+content.css+dockbar.css+eshop-cart.css+footer.css+jquery-ui-1.10.4.custom.min.css+font-awesome.css+jquery.fancybox.css+jquery.fancybox-buttons.css+jquery.fancybox-thumbs.css+select2.css+icons.css+main_menu.css+bootstrap.min.css+bootstrap-select.min.css+bootstrap-o2-custom.css+bootstrap-multiselect.css+captcha.css,Mcc.A_LZNczp1k.css.pagespeed.cf.MlkLt-PFEu.css
  • tablet.css
  • desktop.css
  • A.shCore.css+shThemeDefault.css,Mcc.Fc56mgGgmR.css.pagespeed.cf.HtEHGAHhkC.css
  • jquery.bxslider.impl.css+jquery.bxslider.css.pagespeed.cc.sevQUpFPaI.css
  • everything.jsp,qbrowserId=ie,athemeId=mojeO2_WAR_liferaytheme,acolorSchemeId=01,aminifierType=js,aminifierBundleId=javascript.everything.files,alanguageId=sk_SK,ab=6011,at=1456270993000.pagespeed.jm.FlMHhMl0nf.js
  • jquery2.map.js+jquery.validate.min.js+validator.methods.js+ajax.js.pagespeed.jc.7-oyHcZacW.js
  • main.js+bootstrap-select.custom.js.pagespeed.jc.wrvqf4LdCG.js
  • bootstrap-multiselect.js+bootstrap-tabcollapse.js+bootstrap.min.js.pagespeed.jc.RkZviUhPXx.js
  • jquery-ui-1.10.4.custom.min.js.pagespeed.jm.ndvv-XkOIo.js
  • jquery.ui.datepicker-sk.js+jquery.ui.touch-punch.min.js+jquery.viewport.min.js+jquery.fixedheadertable.min.js+jquery.touchSwipe.min.js+jquery.cookie.custom.js+jquery.iframe-transport.js.pagespeed.jc.ZkCe84ifcL.js
  • jquery.fileupload.js+fancybox,_jquery.mousewheel.pack.js+fancybox,_jquery.fancybox.pack.js.pagespeed.jc.phIqWSTPDq.js
  • fancybox,_jquery.fancybox-media.js+fancybox,_jquery.fancybox-buttons.js+fancybox,_jquery.fancybox-thumbs.js+captcha.js+sessionStorageO2.js+script.js+eportal-componentsinit.js.pagespeed.jc.MVVBK5n0UA.js
  • jquery.dataTables.min.js+jquery.dataTables.bootstrap.js+jquery-datatables-guidelines-pagination.js.pagespeed.jc.xmlF1JcPAt.js
  • storedockbar.js.pagespeed.jm.LZhTPsWlCv.js
  • trackchat.js
  • js,_typeahead.bundle.min.js+js,_main_menu.js+js,_address-suggestor.js+js,_authentication.js+javascript,_touchscreen_menu.js+js,_shCore.js+js,_shBrushXml.js.pagespeed.jc.pJcBe6CfGL.js
  • main.js,qbrowserId=ie,aminifierType=js,alanguageId=sk_SK,ab=6011,at=1456271062000.pagespeed.jm.aVfvRiohkU.js
  • xbg-hp.png.pagespeed.ic._aTVK-LN5f.png
  • OpenSans.woff
  • OpenSans-Light.woff
  • OpenSans-Semibold.woff
  • gtm.js
  • domov
  • xmobile-menu-button.png.pagespeed.ic.7ZuIfxVJpQ.png
  • logo.svg
  • xmobile-mojeo2-menu-button.png.pagespeed.ic.7jrY4IQkxj.png
  • xsmall-shopping-cart-new.jpg.pagespeed.ic.bZGGvTHPOj.jpg
  • xbeztelky_menubanner.png.pagespeed.ic.RAHP_8LgyZ.png
  • niecoextra_menubanner.png
  • x4g.jpg.pagespeed.ic.jPRIHeibeZ.jpg
  • xmobilna_appka_menu.jpg.pagespeed.ic.9gGOCGIdyJ.jpg
  • xev-textbox.jpg.pagespeed.ic.rWSUrS8FiM.jpg
  • glyphicons-halflings-regular.woff
  • xo2logo-blue.png.pagespeed.ic.mdsxXGKFII.png
  • xchcem-byt-o2-zakaznik.png.pagespeed.ic.LJaM1uwVRm.png
  • xchcem-si-dobit-kredit.png.pagespeed.ic.jEC7jZTiFX.png
  • xchcem-zaplatit-fakturu.png.pagespeed.ic.JNLxB_FQjh.png
  • xchcem-si-skontrolovat-spotrebu.png.pagespeed.ic.Eo8g8lItNk.png
  • xtextbox_fer_karta_sutaz.jpg.pagespeed.ic.6g_O2Nb_B8.jpg
  • xtextbox-nieco-extra2.png.pagespeed.ic.8nyq8imCi9.png
  • xtextbox_pausal-20150901.jpg.pagespeed.ic.h4JxwVp0KG.jpg
  • x1dd.png.pagespeed.ic.-mvua7EwES.png
  • divider-gray.png
  • xarrow.png.pagespeed.ic.q2Bn9lvf3o.png
  • xbox-left-border.png.pagespeed.ic.o8KSVWFMjv.png
  • all.js
  • mobile-mojeo2-menu-button-14px.png
  • xguru.png.pagespeed.ic.xeHC9No0Ko.png
  • xofflinebuttons2.png.pagespeed.ic.NI-1Au4r3H.png
  • beztelky_hpbanner.png
  • fontawesome-webfont.woff
  • dc.js
  • conversion_async.js
  • analytics.js
  • 3751.js
  • fbevents.js
  • gemius.js
  • oct.js
  • hmapxy.js
  • ec.js
  • __utm.gif
  • adsct
  • adsct
  • collect
  • collect
  • ga-audiences
  • ga-audiences
  • tags
  • tags
  • www.o2.sk
  • UserMatch.ashx
  • pixel
  • pixel
  • RtbHouse
  • tagging
  • Pug
  • match
  • sd
  • cm
  • fpdata.js
  • lsget.html
  • tap.php
  • 1by1.png
  • slider_blue_sphere.png
  • vms.js
  • xd_arbiter.php
  • xd_arbiter.php
  • ping
  • s
  • slider_white_sphere.png
  • u
  • bc.pv
  • bc.pv
  • clear.gif
  • redot.js

Our browser made a total of 107 requests to load all elements on the main page. We found that 24% of them (26 requests) were addressed to the original O2.sk, 29% (31 requests) were made to O2static.sk and 4% (4 requests) were made to Sk.hit.gemius.pl. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source O2static.sk.

Additional info on o2.sk

Related solutions

Requests

The browser has sent 101 CSS, Javascripts, AJAX and image requests in order to completely render the main page of O2. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

32

Javascripts

49

Images

7

CSS

13

AJAX

101

All

Possible request optimization

1

Javascripts

20

Images

1

CSS

13

AJAX

66

Optimized

35

All

Normal result

Redirects

As for redirects, our browser was forwarded to http://www.o2.sk/ before it reached this domain.

IP address

O2.sk uses IP address which is currently shared with 4 other domains. The more sites share the same IP address, the higher the host server’s workload is. It is strongly recommended that the host server should be changed or the hosting provider should be requested to give a different (separate) IP address for this domain.

Poor result

IP Trace

DNS records

Type Host Target/ip TTL Other
A

o2.sk

160.218.168.20 1800
NS

o2.sk

ns2.tel.cz 1800
NS

o2.sk

dns.iol.cz 1800
SOA

o2.sk

1800 Mname: dns.iol.cz
Rname: hostmaster.iol.cz
Serial: 2022012001
Refresh: 10800
Retry: 3600
Expire: 2592000
Minimum-ttl: 1800
MX

o2.sk

smtp-in.o2.cz 1800 Pri: 10

Language and encoding

Normal result

Language

SK sk language flag

Detected

SK sk language flag

Claimed

Encoding

ISO-8859-1

Claimed

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise O2.sk can be misinterpreted by Google and other search engines. Our service has detected that Slovak is used on the page, and it matches the claimed language. Our system also found out that O2.sk main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

HTTPS certificate

SSL Certificate

O2.sk has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Poor result

Visitor World Map

Country of origin for 91.3% of all visits is Slovakia. It lies approximately 250 miles away from the server location (Czech Republic) and such a small distance can positively affect website speed, as data can travel really fast between those locations.

Good result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of O2. 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:

o2.sk

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