RazzleDazzle 是IFTTT開源的一個iOS幀動畫框架，用Swift編寫，非常適用於APP初次使用時的介紹和引導信息。RazzleDazzle由IFTTT此前開源的一款Objective-C滾動幀動畫庫JazzHands發展而來。JazzHands是UIKit一個簡單的關鍵幀基礎動畫框架，可通過手勢、scrollview、KVO或者ReactiveCocoa控制動畫，被IFTTT應用在IFTTT for iPhone上。多款知名應用程序都使用了JazzHands這個框架，目前其在github上有3688個star。對於RazzleDazzle，開發者除了使用RazzleDazzle支持的動畫類型外，還可以使用自定義動畫類型。

RazzleDazzle支持的動畫類型：

• AlphaAnimation animates the alpha property (creates fade effects).

• BackgroundColorAnimation animates the backgroundColor property.

• RotationAnimation animates a rotation transform (for rotation effects).

• ScaleAnimation applies a scaling transform (to scale view sizes).

• TranslationAnimation applies a translation transform (to translate view position).

• CornerRadiusAnimation animates the layer.cornerRadius property.

• HideAnimation animates the hidden property (hides and shows views).

• LayerStrokeStartAnimation animates the strokeStart property of a CAShapeLayer (does not work with LayerStrokeEndAnimation).

• LayerStrokeEndAnimation animates the strokeEnd property of a CAShapeLayer (does not work with LayerStrokeStartAnimation).

• LayerFillColorAnimation animates the fillColor property of a CAShapeLayer.

• LayerStrokeColorAnimation animates the strokeColor property of a CAShapeLayer.

• PathPositionAnimation animates the layer.position property of a UIView along a path.

• LabelTextColorAnimation animates the textColor property of a UILabel.

• ConstraintConstantAnimation animates an AutoLayout constraint constant.

• ConstraintMultiplierAnimation animates an AutoLayout constraint constant as a multiple of an attribute of another view (to offset or resize views based on another view's size)

• ScrollViewPageConstraintAnimation animates an AutoLayout constraint constant to place a view on a scroll view page (to position views on a scrollView using AutoLayout). This is the animation doing the heavy lifting for AnimatedPagingScrollViewController's keepView(view: onPage:) function.