When Adobe released Creative Suite 4, it removed the ability to create multi-page PDF files, the "PDF Presentation" feature, from Photoshop. Fortunately, this feature has not completely disappeared; Adobe moved it into Bridge, the file-exploring program included with any of the creative Suite programs. By moving the multi-page PDF feature from Photoshop to Bridge, Adobe makes the feature available across all of its Creative Suite programs.
Open the files that you want to add to the PDF in Adobe Photoshop CS4.
Click on the "File" menu, and select "Save As" for each file.
Click on the "New Folder" icon. Save all the files in the same folder.
Open Adobe Bridge.
Click on the "Window" menu, hover over "Workspace," and select "Output." The Output Panel will open on the right.
Navigate to the new folder.
Hold down the "Shift" key, and select the files that you want to add to the PDF.
Click on the "Template" drop-down menu. Select the desired layout for how you want the files to appear in the PDF.
Customise the paper size in the "Documents" section, and customise the layout in the "Layout" section.
Press the "PDF" button at the top of the Output panel.
Click on the "Refresh Preview" button to view how the first page of the PDF will appear.
Click "Save" at bottom of Output panel. Name the PDF and specify the location where you want to save it, then, click "Save."