Make UISlider height larger?

The accepted answer will undesirably change the slider’s width in some cases, like if you’re using a minimumValueImage and maximumValueImage. If you only want to change the height and leave everything else alone, then use this code:

override func trackRect(forBounds bounds: CGRect) -> CGRect {
   var newBounds = super.trackRect(forBounds: bounds)
   newBounds.size.height = 12
   return newBounds
}