Are bookmarks and hyperlinks the same in PDFs?
A bookmark refers to a specific page / paragraph / sentence / regardless of the PDF itself.
bookmark
PDF
A hyperlink in PDF can refer to bookmark (similar to #anchors in HTML ), but can also point to external resources .
hyperlink
#anchors
HTML
external resources
No, bookmarks (outlines) and hyperlinks (link annotations) are not equivalent, but inside they can share some common elements. For example, a bookmark can be used to link to a specific page in a document, and therefore it can contain a hyperlink through Go-To actions.