Jak rychlost webu může zvýšit příjmy | Barcamp Ostrava 2013

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This document discusses how improving the speed of a website can increase revenues. It provides examples of companies that increased their earnings by reducing load times. Specifically, a 2-second delay caused a 4.3% drop in revenue per user. The document recommends tools like PageSpeed Insights and WebPageTest to analyze a site's speed and identify opportunities for optimization. It encourages measuring speed metrics like front-end performance, page load time, and speed index to guide improvement efforts.

Technology

ZPOŽDĚNÍ 2 SEKUNDY ZPŮSOBILO
POKLES 4,3% PŘÍJMŮ NA JEDNOHO
UŽIVATELE.

NÁRŮST PŘÍJMŮ O 1% ZA KAŽDÝCH

100MS ZLEPŠENÍ

ZRYCHLILA STRÁNKY O 2,2 SEKUNDY

ZÍSKALA O 5 MILIONŮ STAHOVÁNÍ ZA MĚSÍC.

PO ZKRÁCENÍ Z 6 SEKUND NA 1,2 SEKUNDY,
SHOPZILLA ZÍSKALA NÁRŮST TRŽEB O 12%

V PŘÍPADĚ KOMERČNÍ STRÁNKY, KTERÁ VYDĚLÁ 2.000 KČ ZA
DEN, BY MOHLO ZPOŽDĚNÍ STRÁNKY O SEKUNDU
POTENCIÁLNĚ STÁT 50.000 KČ V UŠLÝCH TRŽEB KAŽDÝ ROK.

SEO
http://googlewebmastercentral.blogspot.cz/2010/04/using-site-speed-in-web-search-ranking.html

JEDEN MĚSÍC

http://www.tagman.com/conversion-loss-calculator/

PRŮMĚRNÁ VELIKOST WEBOVÉ
STRÁNKY JE 1,5MB!

GOOGLE ANALYTICS

_gaq.push(['_setSiteSpeedSampleRate', 100])

PAGESPEED INSIGHTS
http://developers.google.com/speed/pagespeed/insights/?url=seznam.cz&tab=desktop

WEBPAGETEST
http://www.webpagetest.org/result/131211_MR_1BNC/

UKÁZKA
http://webperf.cz/example/base/
http://github.com/14113/web_performance_example/pull/5
http://www.webpagetest.org/video/compare.php?
tests=131213_R0_N2Z,131213_YN_N1M
http://www.webpagetest.org/video/compare.php?
tests=131213_JT_NNA,131213_YN_N1M

ADAM MARTINÍK
@a14113

!

http://webperf.cz/zdroje

!

http://www.naucmese.cz/kurz/zaklady-zrychlovani-webu

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This is the presentation I shared at our (space150's) Deepspace event on Modern Brand Building. Dion Hughes of Persuasion Arts & Sciences and Adrian Ho of Zeus Jones shared some excellent thoughts on this topic of well (search for their presentations here too). Campaigning isn't quite the right term for what I was trying to say, but some good discussion followed the presentation, so it wasn't totally off. I'll be working to improve this, so if you have any thoughts, please share.

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