Export as New Files
Resizing images one at a time in order to upload them to Facebook, Instagram, or another social media site is one technique that works well for a few images at a time. But if you have a lot of material you'd like to resize, and need it done fast, the Organizer's Export as New Files tool might be your best option.
It has many advantages. You can export a lot of images to a specified location, add a common name to all exports, change the file format, and even choose a specific image dimension. It takes around two minutes to export 200 images—so it's fast.