AE Coati.v1.0
Download AE Coati v1.0, a lightweight After Effects script that solves the common problem of null objects appearing too small in 4K compositions or too large in small comps . This essential utility lets you customize the default source size of new nulls, ensuring comfortable visualization across any resolution workflow.
Tool for changing the source size of new null in After Effects.
Key Features of AE Coati v1.0:
- One-Click Size Adjustment: Freely set the default source size for newly created null objects
- Mask Application: Apply masks to new nulls, changing their apparent size without affecting keyframe animation
- Automatic Resizing: Set source size to “Auto” for automatic scaling based on composition width (100 at 1920px, 200 at 4K)
- Batch Resizing: Change source size of multiple selected nulls simultaneously with one operation
- Smart Memory: Script automatically remembers your last setting for consistent workflow
- Zero Render Impact: Pure script implementation adds no rendering overhead
- Cross-Version Support: Compatible with After Effects 2020 through 2025 on both Windows and macOS
Perfect For:
- Motion graphics artists working across multiple resolution projects
- Editors switching between 4K and HD compositions
- UI/UX designers needing standardized null sizes
- Teams requiring consistent null specifications across collaborative projects
- Anyone frustrated by null objects that are too big or too small for comfortable viewing
System Requirements:
- Adobe After Effects 2020, 2021, 2022, 2023, 2024, or 2025
- Windows 10/11 (64-bit) or macOS
- 4GB RAM minimum (8GB+ recommended)
- 50MB available disk space
- Requires “Allow Scripts to Write Files and Access Network” enabled in Preferences
What is Coati?
When working with 4K compositions, don’t you find that the null is too small?
Also, when working with small compositions, don’t you find that the null is too large?
Using Coati, you can change the source size of new null.
Features
“Change the source size of the new null”
You can change the source size of the new null freely.

“Apply mask to the new null”
You can apply a mask to the new null.
Using a mask allows you to change the apparent size of the null without affecting the keyframe animation.

“Automatic resizing”
If you set the source size to “Auto”, it will automatically adjust to a ratio of “100 when the composition width is 1920”.
In other words, when using 4K composition, the source size of null is 200, so the apparent size does not change.
If you set the mask size to “Auto”, the mask will automatically adjust to the size of the source.

“Resize to selected nulls”
You can change the source size of all selected nulls at once.
You can change the size of the selected null masks all at once.

Trial
There are no functional restrictions.
Manual
Tutorials
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