About Mask & Layer Splitter

Mask & Layer Splitter is an After Effects script from Poly Artboard that consolidates several mask and layer tasks. It separates masks into individual layers, renames them, crops precompositions, and applies layer offsets. The script runs in After Effects 2025, 2024, 2023, 2022, 2021, and 2020. Version 1.2.1 adds a Separate/Sequence naming option, allowing either character‑by‑character naming or a shared base name with zero‑padded numbers. The same release adds support for CC 2025 and fixes license activation connection issues. KBar integration, including icons and a .kbar file, was added in an earlier update, enabling toolbar shortcuts. The script is listed as free, but users should verify current licensing on the developer’s page.

Features

• Separates masks into layers
• Renames layers
• Crops precomps
• Applies layer offsets
• Separate/Sequence naming option: character-by-character naming or a shared base name with zero-padded numbers
• KBar support, with KBar icons and a .kbar file included

Best for

After Effects users who need to separate masks into layers, rename them, crop precomps, and apply layer offsets using a single script.