Create an action
Go to the actions panel (Window and click Actions).
Click New Action (at the bottom of the panel) and New Action window appear.
Choose a name, the set, shortcut and color for your action.
Press the record button, and then go to Image > Image Size to bring up the Image Size window.
choose how you want to resize your images and click “OK”.
Go to File > Save As, and then choose your destination folder. Don’t rename your image.
Choose your image options, and then click “OK”.
Close your image and then, in the actions panel, click the square stop icon next to the red record button.
Your action should now appear in the actions panel.
Resize multiple images by batch processing them
go to File > Automate > Batch.
You should now see the Batch window. Choose the set that you created your action in, and then choose your action. Choose your source folder and fill some informations of the desire file. Do not choose a destination folder because you’ve already recorded that.
Now, click OK.
Happy Batching 🙂