In article ,
(Paul Tomblin) wrote:

Depends where you get the plates from. For a long time, various web sites
had approach plates that they'd scanned themselves, where the PDF
contained a raster image. But then NACO released their own PDFs, where
the plates are in vector format and eminently scalable.

Right, the scanned ones were horrible. Anybody who's still scanning
printed plates just doesn't get it. And anybody who's still using scanned
plates doesn't get it either.

One can abuse PDF just like one can abuse anything.