Import entire PDF to Notes.app - it seems to bring in just the first page

Attach files, website previews, map locations, and more

1. In the Notes app on your Mac, click a note in the notes list.

   If you select a locked note, you can’t attach a video, audio file, PDF, or document to it.

2. Do any of the following to add an attachment:

   • From the desktop: Drag a file into a note.

   • From your Photos library: Drag a photo directly from your Photos library into a note, or click the Media button , select Photos, find the photo or video, then drag it to the note.

   • Directly from your iPhone or iPad camera: Click the Media button , then select Take Photo or Scan Documents to take a picture or scan a document with your iPhone or iPad and insert it in your note. (Requires macOS Mojave or later and iOS 12 or later.) See Insert photos and scans with Continuity Camera.

   • From within another app, like Maps, Safari, Photos, and more: Click the Share button , then choose Notes.

     The Share button doesn’t appear in all apps.

     You can also select some text or images, Control-click your selection, then choose Share > Notes.

To change how large an image, sketch, scanned document, or PDF attachment appears in a note, Control-click the attachment, then choose View as Large Images or View as Small Images. You can’t change how large inline drawings appear in notes.