Onion Skinning
Onion Skinning show ghosts of the keyframes before and after the current frame allowing animators to make decisions in the animation sequence.
The main switch to show/hide Onion Skinning is in the Viewport Overlays, but Grease Pencil Onion Skinning is per-layer and the visibility can be toggle in the layer list. See 2D Layers for more information.
Onion Skinning panel.
Options
Mode
Keyframes:
Shows Keyframes in the range determined by the Before/After settings.
Frames:
Shows Frames in the range determined by the Before/After settings.
Selected:
Shows only on the manually selected keyframes in the Dope Sheet.
Opacity
Control the opacity of the ghost frames.
Filter by Type
Filters what type of frames to show in the Onion Skinning range.
Keyframes Before/After
Sets how many frames or keyframes, depending on the Mode, to show before and after the current frame.
Custom Colors
Before/After
Color to use before and after the current frame on ghost frames.
Display
View in Render
Show the onion skinning in final render image e.g. for a motion blur effect.
Fade
Opacity of the ghosts frames decrease the further away from the current frame.
Show Start Frame
Help working on loop animations showing the first keyframe/frame as ghost when you are on the last frame of your animation.
An example of Onion Skinning activated.