I want to change the default level of bookmarks to None instead of default, but no can do, it simply goes back to default. I want to see if this setting helps the display issue with PDFs in a Web browser. The PDF looks perfectly find in Acrobat (all bookmarks closed) but on the Web page every bookmark is open and it looks messy.
You can try setting the default level to 1, but in my experience, this only controls files viewed in Acrobat and Reader. In a browser window, all bets are off. They do what they want, and they all do it differently.