From the Manual - Photoshop Elements

Gather Your PSD Documents

• Create a folder on your desktop for the PSD documents.
• Drag all the PSD document for your photo book into that folder.

Batch Process the PSD Documents

• Open Photoshop Elements Editor.
• In the Menu Bar, choose File > Process Multiple Files.
• In the dialog box, set Process Files From to Folder.
• For Source, click on the Browse button.
• Navigate to the folder you just created on your desktop, then click Choose.
• For Destination, click on the Browse button.
• Navigate to the folder you just created on your desktop.
• Create a new folder inside that folder named PRINTS and click Choose.
• For File Type, check Convert Files To and then choose JPEG Max Quality.
• Click OK.

TIP: If your computer’s memory cannot handle the batch process of all the PSD files, try breaking the files up into smaller amounts within individual folders.

The Slow Processing Route

• Open a finished template (File > Open).
• In the Menu bar, choose Layer > Flatten Image.
• In the Menu bar, choose File > Save As.
• In the dialog box, navigate to the folder containing the PSD documents.
• If you’ve not done so, create a folder inside that folder named PRINTS. Enter the new folder.
• Set the Format to JPG and click OK.
• In the dialog box, set the Quality to 12 and the Format Options to Baseline. Click OK.
• Close the template without saving.
• Repeat with each finished template. 

From the Manual - Adobe Photoshop

Gather Your PSD Documents

• Create a folder on your desktop for the PSD documents.
• Drag all the PSD document for your photo book into that folder.

Batch Process the PSD Documents

• Open Adobe Photoshop.
• In the Menu Bar, choose File > Scripts > Image Processor.
• In the dialog box, in step one click on Select Folder.
• Navigate to the folder you just created on your desktop, then click Open.
• In step two activate the Save in Same Location button.
• In step three, put a checkmark next to save as JPG. Set the Quality to 12 and uncheck Resize to Fit.
• In step four, make sure that Run Action is unchecked.
• Click Run. 

TIP: If your computer’s memory cannot handle the batch process of all the PSD files, try breaking the files up into smaller amounts within individual folders.

The Slow Processing Route

• Open a finished template (File > Open).
• In the Menu bar, choose Layer > Flatten Image.
• In the Menu bar, choose File > Save As.
• In the dialog box, navigate to the folder containing the PSD documents.
• If you’ve not done so, create a folder inside that folder named PRINTS. Enter the new folder.
• Set the Format to JPEG and click OK.
• In the dialog box, set the Quality to 12 and the Format Options to Baseline. Click OK.
• Close the template without saving.
• Repeat with each finished template. 

From the Transcript - Photoshop Elements

When all your pages have been checked and double checked for errors, it’s time to prepare the pages for printing. This video will show you how to batch process your layouts in Photoshop Elements.

The first thing you need to do is to get all the PSD documents for your album all in one folder. I’ve put my PSD documents into a folder called 2017-Germany-Pages, and then I've placed that folder on my desktop to be easily found. 

Next go into Photoshop Elements Editor. And then in the Menu Bar choose File > Process Multiple Files. Beginning at the top of the dialog box, we'll want to process files from a folder and then it'll ask for the source folder. I'll want to click Browse and then navigate to the file on my desktop. Just click on the folder that contains all your PSD files, then click Choose.

Next you'll need to choose a destination folder for the new JPG files. To do that, click Browse then navigate to the folder that contains your PSD images. Then create a new folder inside that folder named PRINTS. Then click Choose.

Next go to the bottom of the dialog box and click the box next to Convert Files To. Open the drop down menu and choose JPG Max Quality and then click OK.

When elements is finished processing you should see all your maximum quality JPG files inside the print folder that you created. In a later video I’ll be showing you how to use these files to create an album with AdoramaPix. If you are using a different printing service that does not work with full double wide layouts, I’ll show you how to cut your pages in half in the extra video included with this lesson.

Now, going back to the processing, I will warn you that processing the PSD files as a batch can be a humungous memory hog. I personally received a message in the middle of my processing that said the process could not be completed. But when I clicked OK, the files processed just fine. But if you find that this process is too much for your computer, here’s another route you can take.

In this slower route you will need to open up each PSD file on its own within Photoshop Elements. Then in the Menu bar, choose Layer > Flatten Image. Again in the Menu bar, choose File > Save As. Navigate to the file on your desktop that contains all the PSD files. And if you haven't already created one, you'll need to create a new folder within this folder called PRINTS. Then click to activate that new folder. Next change the Format to JPG and I'll uncheck Elements Organizer because I don’t use that, but I do want to keep the color embedded. Then I'll click Save. Elements will then ask me to assign a quality to this image, I'll choose a Quality of twelve, and the Format Options should be Baseline. Then, click OK. Then when you are finished go ahead and close the document and then move to the next one. So that is how to prepare your PSD files for printing. 

From the Transcript - Adobe Photoshop

When all your pages have been checked and double check for errors, it’s time to prepare the pages for printing. This video will show you how to batch process your layouts in Photoshop. The first thing you need to do is to get all the PSD documents from your album all in one folder. I’ve put my PSD documents into a folder called 2017-Germany-Pages.

Then in Adobe photoshop, go into the Menu bar and choose File > Scripts > Image Processor. In the dialog box, go to step number one and click on Select Folder. Navigate to the folder that contains all your PSD images and then click Open. Go to step two and activate the Save in Same Location button. Go to step three and put a checkmark next to save as JPG. We'll set the Quality to 12 and uncheck Resize to Fit. In step number four, make sure that Run Action is unchecked. Then click Run. 

When Photoshop is finished processing, you should see all your maximum quality JPG files inside a folder called JPEG inside the folder that contains all your PSD images. In a later video I’ll be showing you how to use these files to create an album with AdoramaPix. If you are using a different printing service that does not work with full double wide layouts, I’ll show you how to cut your pages in half in the extra video included with this lesson.

Now, going back to the processing, I'll warn you that processing the PSD files as a batch can be a humungous memory hog. So if you find that this process is too much for your computer, here’s another route you can take.

In Photoshop begin by opening one of the PSD images from your folder. Then in the Menu bar choose Layer > Flatten Image. Then in the Menu Bar choose File > Save As. In the dialog box, navigate to the folder that contains your PSD images and then create a new folder within this folder called PRINTS. Set the Format of the image to JPEG and click Save. In the dialog box make sure the Quality is 12 and the Format should be Baseline. Then click OK. Then close this image and go on to the next one. So that's how you prepare your psd files for printing.