You can save a OneNote notebook as a PDF, but if you update the notebook, those changes will not be reflected in the PDF.

OneNote in Windows 11/10 is one fine note taking UWP app. See how to create a note, password protect sections, draw, add images, change settings, etc in the One Note app.

OneNote is Microsoft's note and note-syncing app. It's deeply integrated into Windows 10, so there's no better time than now to start learning to use it ...

Microsoft's OneNote app for Windows 10 will now allow the editing of attached files. The new ability is currently being rolled out to Office Insiders, and will come to more channels later.

The ability to save as PDF is built right into Microsoft Word for Windows, for example: Choose File, then Save as, and PDF is listed as one of the file types to the left of the Save button.