Attachments panel
PDF files can take attachments, just as emails do. Attachments and their options are available from the Attachments panel in the Panel area.
Open this panel with this icon on the Panel bar. Close it with the icon
top-right in the panel.
Add attachments
Click the Add (
) button inside the Attachments panel, select one or more files and click
Open.
Delete attachments
Click the Delete (
) button to remove selected attachments from the PDF. Note that this will
not remove such files from your computer, only detach them from your document.
Open attachments
Select an attachment, click the Open (
)button, set opening options in the dialog box, and click
OK.
The attachment will open in its associated application.
Click the
Save button when you are done with attaching files.
Click the
Options tool to access the above commands through a drop-down list; you can also have the attachment
panel shown by default whenever the PDF document is opened, enter or edit attachment descriptions to tell PDF recipients what they
contain and also reset the list of allowed and disallowed attachment file types.
Attachments can also be added to PDF files as annotations at a particular location within the document. If you flatten a PDF you can select to delete attachments that are annotations leaving only an attachment icon, but files attached directly via the Attachments Panel are not removed by flattening. By contrast, during document inspection (Remove Elements in the Security ribbon) you can select to remove all files in the Attachments panel list, and by removing comments, all files attached as annotations can also be removed.