If you, too, face a similar problem, first, restart your computer and see if you can delete it. If not, here are a few things you could try. Go to the desktop folder/s and try deleting from there.
The Adobe PDF format allows businesses to create documents from virtually any application and share them whether the recipient has the program that created the file or not. If you have PDFs you ...
You can delete pages from a PDF on a Mac using the Preview app. You can also add pages to a PDF in two ways with Preview.