How to use PDF Debugger to inspect a PDF file’s code
Apple ended direct PostScript file support in macOS Sonoma, but you can still peek inside PDF files to see what they contain, by using PDF Debugger.
PDF – the web’s ubiquitous document format was invented at Adobe Systems in the early 1980’s. At that time laser printers had just come of age with Apple’s LaserWriter printer and the Macintosh Plus, which served as one of the world’s first commercial desktop publishing systems.
