Roblox is tightening its avatar body validation system, making it harder for creators to use workarounds that allow smaller avatars to bypass existing size requirements.
Starting this week, Roblox is improving its existing bounding box validation checks to ensure newly published avatar bodies meet the platform's size and scaling requirements.
Bounding boxes are used by Roblox to determine the overall dimensions of avatar body parts. Under the updated validation system, Roblox will better detect cases where a model's geometry technically meets the required bounding-box dimensions while the visible body itself remains significantly smaller.
The change targets techniques that have previously been used to get around minimum avatar-size requirements. In a 2025 Creator AMA, Roblox developers acknowledged that some small and mini avatar bundles had relied on methods such as adding tiny invisible geometry to increase the bounding box of body parts.
Roblox's current body specifications already require body parts to occupy a significant portion of their bounding boxes, including a minimum visibility requirement for major body parts.
What happens to existing avatars?
The update primarily affects newly published avatars, meaning creators will no longer be able to rely on these workarounds when submitting new bodies. Reports indicate Roblox also plans to address existing affected avatars over the coming months, with some potentially being automatically corrected and others potentially removed if they cannot be brought into compliance.
The change is part of Roblox's broader effort to make avatar sizes and scaling more consistent across the platform.
For developers and UGC creators, this means that future avatar bodies will need to comply more closely with Roblox's intended dimensions rather than relying on geometry-based workarounds.
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