RuntimeThumbnails

Generate Texture2D from Game Object or prefab using a camera at runtime.

// Camera view
tex = thumbnailGenerator.Generate();

// Game Object
objectThumbnailGenerator.TargetObject = targetObject;
tex = objectThumbnailGenerator.Generate();

// Prefab
prefabThumbnailGenerator.TargetObject = targetPrefab;
tex = prefabThumbnailGenerator.Generate();

Import via UPM

https://github.com/eviltwo/RuntimeThumbnails.git