This is the 10024th most frequent German word.
The German word "PDF" refers to a digital file format for documents that stands for "Portable Document Format."
Here, 'PDF' refers to the file format in which the report is saved.
Ich habe den Bericht als PDF gespeichert.
I saved the report as a PDF.
In this sentence, 'PDF' is used to describe a specific file type being attached and sent.
Kannst du mir die PDF-Datei per E-Mail schicken?
Can you send me the PDF file via email?
'PDF' is used to specify the format in which the manual can be accessed.