Performance tips & tricks
The known, unknown and shady ones...

Hello World!
Jeroen Moors
@jeroenmoors
http://jeroen.is
Tha uzer
Why?

FIX IT!

Important stuff!
Less important...
http://developer.yahoo.com/yslow
https://developers.google.com/speed/pagespeed
Tools
Images
Images
Use the right size
Images
Use the right type
Images
Optimize with Page Speed
Images
CSS Sprites
Images
Favicon.ico
Javascript
Javascript
UglifyJS
http://browserify.org
Don't use jQuery*
* Or any other library
Use vanilla Javascript
Caching
Invalidate the cache
Try & Measure
http://webwait.com
Measure more...
http://www.webpagetest.org
Trick the user
Fast feedback
Above the fold
50%
Early flush
Ajax loading
Don't use jQuery*
* Or any other library