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. You can also use the PDF format to save multiple images in a multipage document or slide show presentation. (See Creating a PDF presentation.) Saving in Photoshop PDF format lets you specify security options for restricting access to the PDF document. The new 128-bit RC4 (Acrobat 6) encryption has an option for letting users view metadata and thumbnails in a secure PDF document using the File Browser. For more information about the PDF format including the differences between Photoshop PDF and generic PDF, see PDF.

To save a file in Photoshop PDF format:

1. Choose File > Save As and choose Photoshop PDF from the Format menu. You can select a Color option if you want to embed a color profile or use the profile specified with the Proof Setup command. Click Save.
2. In the PDF Options dialog box, select the options you want, and click OK.
Encoding
Determines the compression method (Zip or JPEG). For more information, see About file compression.
Note: Bitmap-mode images are automatically encoded using CCITT compression--the PDF Options dialog box does not appear.
Save Transparency
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 or does not contain transparency.
Image Interpolation
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, this option 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.
PDF Security
Specifies security options such as password protection and restricted access to a file's content. Select PDF Security and then click the Security Settings button to open the PDF Security dialog box. Specify the security options that you want and then click OK.
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:
• Embed Fonts ensures that all fonts used in the file are displayed and printed, even on computers that do not have the fonts installed. Bitmap fonts, fonts that don't allow PDF embedding, substitute fonts, type that uses the faux bold style, and warped type cannot be embedded. Selecting Embed Fonts increases the size of the saved file.
• Use Outlines for Text saves text as paths. Select this option if embedding fonts results in a file that is too large, if you plan to open the file in an application that cannot read PDF files with embedded fonts, or if a font fails to display or print correctly. Text saved as outlines is not searchable or selectable in a PDF viewer. You can, however, edit the text when you reopen the file in Photoshop.
Note: The PDF viewer may display a substitute font if both Embed Fonts and Use Outlines for Text are deselected.

To specify PDF Security options:

1. In the PDF Options dialog box, select PDF Security and then click the Security Settings button to open the PDF Security dialog box.
2. In the PDF Security dialog box, select Password Required to Open Document and specify a Document Open Password to prevent users from opening the document unless they type the password you specify. Passwords are case-sensitive.
3. Select Password Required to Change Permission and Passwords and specify a Permissions Password to restrict users from printing and editing the file. Users cannot change these security settings unless they type the passwords that you specify. You cannot use the same password used for the Document Open Password. Users are required to enter the Permissions Passwords when opening the PDF file in Photoshop.
4. Use the Compatibility menu to choose the type of encryption for opening a password-protected document.
40-bit RC4 (Acrobat 3.x,4.x)
Specifies a low encryption level.
128-bit RC4 (Acrobat 5)
Specifies a high encryption level, but users of Acrobat 3 and Acrobat 4 cannot open PDF documents set with high encryption.
128-bit RC4 (Acrobat 6)
Specifies a high encryption level, but users of Acrobat 3, Acrobat 4, and Acrobat 5 cannot open PDF documents set with this encryption. This encryption lets you enable plaintext metadata and thumbnails, an option not available in versions earlier than Acrobat 6.
5. In the Compatibility area of the PDF Security dialog box, specify the following options:
For 40-bit RC4 (Acrobat 3.x,4.x) encryption:
No Printing
Prevents users from printing the document.
No Changing the Document
Prevents the user from making any changes to the document, including filling in signature and form fields.
No Content Copying or Extraction, Disable Accessibility
Prevents users from selecting and copying contents of the PDF document.
No Adding or Changing Comments and Form Fields
Prevents the user from adding or making changes to comments and form fields.
For 128-bit RC4 (Acrobat 5) or 128-bit RC4 (Acrobat 6) encryption:
Enable Content Access for the Visually Impaired
Lets visually impaired users use screen readers to read the document's contents.
Allow Content Copying and Extraction
Lets users select and copy the contents of the PDF document. It also lets utilities that need access to the contents of a PDF file, such as Acrobat Catalog, get to those contents.
No Encryption for Metadata and Thumbnail (Acrobat 6 only)
Lets metadata and thumbnails in a secure PDF document be viewed in the File Browser. Among the many uses of this feature, you can let clients read information (metadata) and preview images without the need to give them the password for full access to the secure PDF document.
Changes Allowed
Define which editing actions are allowed in the PDF document:
• None prevents the user from making any changes to the document, including filling in signature and form fields.
• Only Document Assembly lets users insert, delete, and rotate pages, as well as create bookmarks and thumbnail pages.
• Only Form Field Fill-in or Signing lets users fill in forms and add digital signatures. This option doesn't let users add comments or create form fields.
• Comment Authorizing, Form Field Fill-in or Signing lets users fill in forms and add digital signatures, and comments.
• General Editing, Comment and Form Field Authoring lets users change the document using any method listed in the Changes Allowed menu, except remove pages.
Printing
Specify the quality of printing for the PDF document:
• Not Allowed prevents users from printing the document.
• Low Resolution lets users print the document at no higher than 150-dpi resolution. Printing may be slower because each page is printed as a bitmapped image.
• Fully Allowed lets users print at any resolution, directing high-quality vector output to PostScript and other printers that support advanced high-quality printing features.
6. Click OK.