How do I remove a usage restriction from a PDF file?
52818
Removing the password from a PDF file
75737
How can I restrict users from deleting files?
74068
Is there an efficient way to copy text from a PDF without the line breaks?
38937
LaTeX - how do I force PDF page height/width?
9754
How to decrease .pdf size without losing quality
25062
Which programs can I use to edit PDF files?
16377
How to add an invisible watermark to PDF documents?
69391
How do I stop PDFs opening in RollerCoaster Tycoon?
105804
How can tagged PDFs be created that support Universal Accessibility and reflowing?
75839
How can I change pdf page size?
153190
How to temporarily disable PDF bookmarking ?
115739
Microsoft Edge keeps taking over PDF file open/association
152385
Is there a way to unlock PDF documents?
66743
How do I open PDF in Adobe Reader DC without locking the file from being updated by pdflatex?
149332
How can I fix/repair a corrupted PDF file?
122798
Prevent selecting & copying
130881
Prevent PDF file from downloading and printing