The Batch command runs an action on a folder of files. If you have a digital camera or a scanner with a document feeder, you can also import and process multiple images with a single action. Your scanner or digital camera may need an acquire plug‑in module that supports actions.
You can also import PDF images from Acrobat Capture or other software programs.
When batch-processing files, you can leave all the files open, close and save the changes to the original files, or save modified versions of the files to a new location (leaving the originals unchanged). If you are saving the processed files to a new location, you may want to create a new folder for the processed files before starting the batch.
To batch-process using multiple actions, create a new action that plays all the other actions, and then batch-process using the new action. To batch-process multiple folders, create aliases within a folder to the other folders you want to process, and select the Include All Subfolders option.
For a tutorial on image processing techniques, see www.adobe.com/go/learn_ps_processraw.