by Romain Cousin·Motion Graphics
Images © Romain Cousin. Used for product review; image policy.
Keystone 3 earns its place in the aescripts library by gathering align, stagger, order, stretch, keyframe value, layer order and anchor tools into a single After Effects panel.
Keystone 3 is a toolset for After Effects from Romain Cousin, built for animators. It brings together functions to align, stagger, order and stretch layers, along with color labels, inside one panel.
The stagger tools include Bezier controllers, three methods for calculating stagger and a cumulative mode. Keystone 3 also adds Keyframe Values and Layer Order sections, plus section shortcuts for moving between its controls.
The Anchor section repositions anchor points or creates null objects with a CTRL/CMD click, and can target individual layers, layer groups, the composition, custom coordinates, or the internal anchor points of shape and text layers. Null layers created by the Anchor functions are placed directly above the selected layers and trimmed to match the length of their children. Version 3.1.4 works with After Effects 2026, 2025, 2024, 2023 and 2022.
Keystone 3 is best for animators working with layers, staggers and anchor points in After Effects.
Keystone 3 is completely free to download and use.
Keystone 3 is compatible with After Effects 2026, 2025, 2024, 2023 and 2022. Version 3.1.4 is the current release, updated on April 29, 2026. If you run one of these versions, you can use the plugin's align, stagger, order, stretch, color label, Keyframe Values, Layer Order and Anchor functions. For any newer After Effects release or details beyond these versions, check the developer's page on aescripts for the latest compatibility information.
Keystone 3 is listed as free in this catalog. Because licensing terms can change over time, it's worth checking the developer's page on aescripts for the current details before you download or depend on it in a project. There you can confirm how the plugin is distributed and any conditions that apply, along with the most recent version and update information for After Effects.
Keystone 3 includes an Anchor section that repositions anchor points or creates null objects when you CTRL/CMD click. It can target individual layers, layer groups, the composition, custom coordinates, or the internal anchor points of shape and text layers. Null layers created through the Anchor functions are placed directly above the selected layers rather than at the top of the timeline, and they are automatically trimmed to match the length of their children.
Keystone 3 version 3.1.4, released on April 29, 2026, adjusts how null layers from the Anchor functions behave: they are now placed directly above the selected layers instead of at the top of the timeline, and they are automatically trimmed to match the length of their children. This release also includes various code optimizations. Earlier updates in the 3.1 line added the Anchor section itself and refined checkbox appearance and layout handling.
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