[djprice1]

Woah! What determines if something is an object at that vector level? I've done some light PDF investigations before and the whole PDF spec is super intimidating. Seems insane that you can understand which things are objects in the actual drawing at the PDF vector level

[knollimar]

Mamy of the drawings in pdf space have some layer data from CAD/revit attached to them that might make it easier to cluster objects

[aakashprasad91]

Yep, exactly, when layer data survives the PDF export, it’s a huge help. We use it as a weak signal for clustering and object grouping, but never rely on it fully since it’s often inconsistent or stripped. When it’s there, accuracy and speed both improve noticeably.