“80% of the end-user response time is spent on the front-end.” – Yahoo!

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Ok, Human Rights are more important than client side performance

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Slow Web sites are expensive and will make you look dorky.

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We’re using Amazon

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YSlow is our friend

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Let’s start optimizing!

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Limit the number of Http connections

Limit the number of Http connections

CSS sprites

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Limit the number of Http connections

Combine files

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Make sure you benefit from compression

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Set an expiry date somewhere far in the future

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Put style sheets at the top

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Put scripts at the bottom

Put style sheets at the top

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Use a Content Delivery Network (CDN)