Smart Resize is a time-saving feature for Pro subscribers that helps you take a single design and instantly create multiple sizes fit for other channels.
Example: You have an Instagram post design that you made in PicMonkey and you'd like to replicate it, right-sized, to use on other social media channels and in other formats.
With your multi-layered design open in PicMonkey, click Smart Resize.
Select the additional formats you'd like to create. Selecting multiple is okay.
Click "Copy & Resize" when finished selecting.
Choose to continue editing your original, or go to Hub to see all your resized images.
Open a resized image from Hub and tweak the layers if you like -- reposition a photo, text, graphic, or change the color and so forth.
Learn more about Smart Resize: Using Smart Resize to Output Your Image to Multiple Sizes