Bookmark PDF pages in Preview on Mac
You can bookmark a page in a PDF so you can return to it later.
In the Preview app on your Mac, open the PDF you want to bookmark.
Do any of the following:
Add a bookmark: Choose Tools > Add Bookmark.
View bookmarks: Choose View > Bookmarks.
Go to a bookmark: Click the bookmark in the Bookmarks sidebar.
Close the Bookmark sidebar: Choose View > Hide Sidebar or View > Thumbnails.
Delete a bookmark: Choose View > Bookmarks, Control-click the bookmark in the sidebar, then click Delete.