Page speed become an important ranking factor for Google and other search engines. On these slides Abbas provides some research results which indicated the effect of page speed on conversion rate and revenue of different websites. He also provides top 10 reasons why websites are slow as well as WordPress recommended plugins to overcome this issue. For more information visit http://abbasheidari.com

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4. Source (http://backlinko.com/google-ranking-
factors )
Source
(http://googlewebmastercentral.blogspot.com.
au/2010/04/using-site-speed-in-web-search-
ranking.html)
Source
(https://blog.kissmetrics.com/speed-is-a-
killer/)

7. Shopzilla speeded
up average page
load time from 6
seconds to 1.2
seconds, and
increased revenue
by 12% and page
views by 25%.
Amazon increased
revenue by 1% for
every 100ms of
improvement
(same as
Walmart).
Yahoo increased
traffic by 9% for
every 400ms of
improvement.
Mozilla got 60
million more
Firefox downloads
per year, by
making their pages
2.2 seconds faster.
Source (http://www.globaldots.com/how-
website-speed-affects-conversion-rates/)

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11. http://www.fastly.com/
Source (http://www.stevesouders.com/blog/2012/02/10/the-performance-golden-rule/)

14. PageSpeed Insights ( From Google)
http://www.webpagetest.org/ (supported by Google)
GTMetrix (GTMetrix and Yslow)
Webpage Analyzer
Load Impact

16. Image source (http://softstribe.com/wordpress/enable-gzip-compression-in-wordpress)

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24. photo credit: PetitPlat – Stephanie Kilgast – cc

26. Image Source (http://moz.com/ugc/expires-headers-for-seo-
why-you-should-think-twice-before-using-them)

28. Google Analytics
Source: https://support.google.com/analytics/answer/2383341?hl=en

29. Google Analytics

30. Page Load Time
Source (http://gtmetrix.com/why-is-my-page-slow.html)

31. • Government website
• They were using an external JavaScript file to serve three lots of Google Analytics
code, sending data to three different UA numbers (a requirement for government
sites).
• The three code versions were all asynchronous ga.js. Combined, with three lots of
GA and their external javascript file, it was taking 914 ms to load everything
required for the tracking.
• Government sites consider accessibility to be very important and page load is a big
part of accessibility, especially for users on mobile devices or on regional ADSL

35. https://au.linkedin.com/in/abbasheidari
http://www.slideshare.net/abbasheidari
me@Abbasheidari.com
0401640137