This class has three properties.
Vector2 AbsolutePosition [readonly]
A read-only Vector2 value that is the GuiObject's current position (x,y) in pixel space, from the top left corner of the GuiObject.
Vector2 AbsoluteSize [readonly]
A read-only Vector2 value that is the GuiObject's current size (width, height) in pixel space.
It takes 1.3 seconds to initiate on join, and .3 of a second on respawn. Only LocalScripts see the absolute size; for normal scripts, AbsoluteSize is set to Vector2.new(0, 0).