This task can be performed using Picmal
Image converter for Mac
Best product for this task
Picmal
tech
Picmal makes image conversion simple. Convert batches of images between formats, entirely offline on your Mac—fast and private.

What to expect from an ideal product
- Open Picmal and drag your images directly into the app without needing any internet connection or cloud uploads
- Choose your desired output format from the dropdown menu - supports all major image types like JPEG, PNG, WEBP, and HEIF
- Select multiple images at once to convert entire folders or batches in one go instead of processing files individually
- Hit the convert button and watch your images transform instantly while staying completely on your Mac's hard drive
- Find your newly converted files in the output folder you selected, ready to use with their original quality preserved
