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Add Research Notes to a Family PDF on Mac
Open the PDF in the Mac Preview app, use the Markup toolbar to insert notes, and save the document with either editable or flattened annotations.

To append research notes to a family document PDF on a Mac, you can use built-in tools to insert text annotations and display your notes in a sidebar Apple Support. You can also choose to save the finished file with either editable or flattened annotations Apple Support.
Inserting notes into the PDF
Go to the Preview app on your Mac and open the PDF you want to annotate Apple Support. If the Markup toolbar isn’t showing, click the Show Markup Toolbar button Apple Support. Next, click the Note button and type your text Apple Support. To close the note, click anywhere on the PDF page Apple Support.
Customizing and locating your notes
Once added, you can drag the note to a different location Apple Support. To change the note color, Control-click the closed note and then choose a color Apple Support.
To view all the notes in a PDF, choose View > Highlights and Notes so that the menu item has a checkmark next to it Apple Support. All the notes in the document are displayed in the sidebar Apple Support.
Saving editable or flattened annotations
As a practical suggestion, consider whether you want to prevent future modifications before you save your document.
Saving Options
- Keep editable: To save a PDF and allow annotations to be edited later, choose File > Save, File > Export, or File > Export to PDF Apple Support. (PDFs are also saved with editable annotations when they are saved automatically Apple Support.)
- Flatten annotations: To save a PDF and flatten annotations so that they cannot be edited, choose File > Print, then select Save as PDF Apple Support.