About MaskShapeConverter

MaskShapeConverter is a script for After Effects that enables two-way conversion between masks and shape layers while preserving keyframe animation. It includes a Merge Shapes setting that maintains visual consistency when additive and subtractive masks are mixed. When converting from a 3D layer, the newly created shape layer is also set as 3D. Users can assign the created shape layer as a track matte using Alt (Option) + click, choose its position above or below the source layer, and have its anchor point centered. Rounded corners in polygonal paths are supported, and conversion works from non‑Bezier paths. The script is compatible with After Effects 2026, 2025, 2024, and 2023, and the current version is 1.4, released on June 14 2026. It is listed as free in this catalog.

Features

• Two-way conversion between masks and shape layers
• Keyframe support during conversion
• Merge Shapes setting that keeps appearance consistent even when additive and subtractive masks are mixed
• Created shape layer set as 3D when the selected layer is a 3D layer
• Option to set a created shape layer as a track matte via Alt (Opt) + click
• Option to place the shape layer above or below the selected layer, with anchor point set to center
• Support for rounded corners in polygonal paths

Best for

After Effects users who need to transfer path geometry between masks and shape layers, including animated keyframes and 3D layers.