http://darkforge.blogspot.com/2010/05/customize-android-browser-scaling-with.html http://www.quirksmode.org/blog/archives/2010/04/a_pixel_is_not.html device-dpi: Use the device’s native dpi as target dpi. low-dpi: 120dpi medium-dpi: 160dpi, which is also the default as of today high-dpi: 240dpi <number>: We take any number between 70 and 400 as a valid target dpi.