Long-term Brand Effects
Slowness damages
the brand.
(Google, Microsoft,
2009)
Google uses speed
in search result
ranking (SEO) and
quality score
(AdWords)
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Speed Means Business
+3% ad revenue, +17% page views per session.
(Edmunds, 2010)!
+7-12% conversions! 50% reduction in operation costs
(Shopzilla, 2009)!
+15% (+60M) downloads, each 1sec increased 2.7%
downloads (Firefox, 2010)
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Fred Wilson
Managing Partner, Union Square Ventures @ NYC
http://www.aVC.com/
“1. Speed is
the most
important
feature.”
10 Golden Principles of Successful Web Apps http://vimeo.com/10510576
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Fight for
Features
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Anti-Ads
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Fast Ads
Get rid of document.write!
Load ads later, when ready
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Anti-Content
CMSs like WordPress,
Drupal, Magento, etc.
Search result, auto-
complete, etc.
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Fast Content
Static content
Caches (APC, memcache, Varnish, CDN, browser)
Flush HTTP stream early / multiple times
http://calendar.perfplanet.com/2014/async-fragments-rediscovering-progressive-html-
rendering-with-marko/
Optimize
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Anti-Progress
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Fast Progress
Mobile Design Details: Avoid The Spinner: http://www.lukew.com/ff/entry.asp?1797
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Fast Progress
Mobile Design Details: Avoid The Spinner: http://www.lukew.com/ff/entry.asp?1797
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Anti-Carousel
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Fast Carousel
just image
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Fast Carousel
loaded
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Anti-Responsive Design
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Load just enough code
Use modern tech where
aplicable
Don’t copy desktop features
1-to-1
Fast and Responsive
Tim
Kadlec
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Anti-Images
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Responsive Images
0.000
1.000
2.000
3.000
4.000
Small Medium Large Source
3.818
1.454
1.233
0.407
http://responsiveimages.org/