by Poly Artboard·Workflow
Images © Poly Artboard. Used for product review; image policy.
Mask & Layer Splitter stands out in the aescripts library for combining mask separation, layer renaming, precomp cropping, and layer offsets in one script. The 1.2.1 update adds a Separate/Sequence naming option, and KBar support arrived in an earlier release.
Mask & Layer Splitter is an After Effects script from Poly Artboard that handles several mask and layer chores in one place. It separates masks into layers, renames them, crops precomps, 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 option, letting you choose character-by-character naming or a shared base name with zero-padded numbers. This release also adds support for CC 2025, includes a bug fix, and resolves license activation connection issues. KBar support arrived in an earlier update, with KBar icons and a .kbar file included.
Mask & Layer Splitter sits in the aescripts library, and a demo video is available for a closer look. It is listed here as free; check the developer's page for current licensing details.
Mask & Layer Splitter is best for after Effects users who need to separate masks into layers, rename them, crop precomps, and apply layer offsets from a single script.
Mask & Layer Splitter is completely free to download and use.
Mask & Layer Splitter supports After Effects 2025, 2024, 2023, 2022, 2021, and 2020. Support for CC 2025 was added in version 1.2.1, released on November 11, 2025. If you run one of these releases, the script should install and operate as described. The script covers six recent releases, so most current workflows are included. For any version outside this range, check the developer's page before installing, since compatibility beyond the listed releases isn't confirmed here.
Mask & Layer Splitter offers a Separate/Sequence option, added in version 1.2.1. It lets you choose between character-by-character naming and a shared base name with zero-padded numbers, so you control how the resulting layers are named when masks are split. Alongside this naming choice, the script can separate masks into layers, rename them, crop precomps, and apply layer offsets, keeping several mask and layer tasks within a single tool rather than spread across separate steps.
Mask & Layer Splitter supports KBar. KBar support was added in version 1.1.0, released on November 28, 2024, and that update also included KBar icons and a .kbar file. This means its functions can be placed on a KBar toolbar if you use KBar. The current 1.2.1 release builds on the same all-in-one workflow of separating masks, renaming layers, cropping precomps, and applying offsets. Check the developer's page if you need setup details for KBar.
Mask & Layer Splitter is listed here as free. Because licensing and pricing can change, the developer's page on aescripts is the place to confirm current terms before you download or install. It's worth noting that version 1.2.1 fixed license activation connection issues by updating the underlying framework to 4.4.1, so activation should be smoother on that release. For the latest details on availability and any licensing steps, refer to the developer's page.
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