Saving files in Photoshop PDF format (Photoshop)
You can use the Save As command to save RGB, indexed-color, CMYK, grayscale, Bitmap-mode, Lab color, and duotone images in Photoshop PDF format.
To save a file in Photoshop PDF format:
Determines the compression method. (See About file compression.)
Note: Bitmap-mode images are automatically encoded using CCITT compression--the PDF Options dialog box does not appear.
Preserves transparency when the file is opened in another application. (Transparency is always preserved when the file is reopened in Photoshop or ImageReady.) This option is not available if the file contains a spot color channel.
Anti-aliases the printed appearance of a low-resolution image.
Downgrade Color Profile
If you selected ICC Profile (Windows) or Embed Color Profile (Mac OS) for a version 4 profile in the Save dialog box, downgrades the profile to version 2. Select this option if you plan to open the file in an application that does not support version 4 profiles.
Specifies security options such as password protection and restricted access to a file's content. Choose 40-bit or 128-bit RC4 encryption for a lower or higher level of security. For more information on PDF security, see Acrobat Help.
Include Vector Data
Preserves any vector graphics (such as shapes and type) as resolution-independent objects, ensuring smoother output. When it is selected, you can select the following options:
Note: The PDF viewer may display a substitute font if both Embed Fonts and Use Outlines for Text are deselected.