To do so, click on “Edit,” and then “Select All.” In Preview, select all the images you’d like to batch resize from the left side thumbnail drawer.
You can even refine your images further by removing any items you may have selected by mistake. You can scroll through the list to view specific items in the main panel. To do so, select all of the images, then right-click, and then select “Open with” and click on “Preview.” At this point, Preview will display all the images selected on the left-hand side thumbnail drawer. Preview is a powerful yet easy-to-use software that’s designed to resize multiple images in one fell swoop. How to Batch Resize Images on a Mac With Preview
