InDesign Page Numbering - page spreads

Don't output as spreads--it makes it difficult to read on small screens and the end user can't print it out as a booklet. The easiest thing to do would be to change the view settings in the PDF using Document Properties. That gives the end user the option to change it.

If you want page 1 to be a right-hand page, use one of the Cover Page optons.

As far as the TOC is concerned, in my option, they are generally only good for printed documents. For online PDFs, be sure to create bookmarks when creating your TOC. Then set the bookmark panel to open automatically.

If you add security to your PDF (to edit, not to open), the settings will stay the same when opening but the user can change per viewing. 

Hi @Roman22840239vayf:

Are you exporting a spread because you want people to see the left and right facing pages?

If yes, you can export as Pages and then set the view in Adobe Acrobat. 

If that works, you can set this as the initial view settings on export so that the file always open the way that that you want people to see it. 

Then the page numbers behave as expected.

~Barb