| A file attachment is a file of any type, even another PDF document, that's attached to a PDF document. When you open a PDF file containing an attachment, you can save the attached file to disk. Viewing and saving file attachments from a PDF doesn't require any special usage rights. But if you want to attach a file to a PDF document in Adobe Reader, the PDF must have usage rights enabled. Acrobat Standard and Professional users, however, can attach files and save attachments without any special usage rights.  | If you don't have a file with an attachment, you can download and use the acrobatTips.pdf file from www.peachpit.com/adobereader7. The file is secure, so in the Password dialog, type: password. |
Why can't I save an attachment? PDF authors can attach a file to a PDF document in one of two ways. The author can select the Attach a File menu command and then identify a file via a dialog. This method is known as a document-level attachment. The second method for attaching a file is to use the Attach File as Comment tool.This tool also exists in Adobe Reader when you open a PDF with usage rights enabled. A PDF author can add an attachment as a comment and choose to enable the PDF with usage rights or not enable the document. The Save Attachment menu command appears in PDFs where a document-level file attachment has been added to a PDF or when a file is attached as a comment and also includes usage rights. If you open a PDF with a file attachment and the Save command does not exist, the file was attached as a comment and NO usage rights were enabled in the document. |
To save file attachments to your hard drive as separate files: 1. | Open a PDF file containing file attachments or use the acrobatTips.pdf file.
| 2. | If the Attachments pane isn't open, click the Attachments tab.
| 3. | Open a context menu on a file attachment and select Save Attachment (Figure 10.11).
Figure 10.11. Open the Attachments pane, and from a context menu opened on a file attachment, select Save Attachment. 
| 4. | The Save Attachment dialog opens. The dialog has the same attribute choices as you find in the Save and Save As dialogs. Type a name for the file and select a target folder. Click Save, and the attachment is saved as a separate file apart from the PDF document.
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Why can't I open file attachments? Any file of any type can be attached to a PDF document. You can attach Microsoft Office documents or any other kind of file created in an authoring program. But you need to have the application that created the file installed on your computer. If, for example, you try to open a PowerPoint document attached to a PDF document, you need to have PowerPoint installed on your computer. Although Adobe Reader enables you to see files attached to PDFs in the Attachments pane and to save the attachments to your hard drive, Reader can't help open the attached documents. |
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