iResize can resize, compress, and save as JPEG at 72dpi the images: GIF, JPEG, PICT, PNG, TIFF, and PSD or, for maximum quality, can resize images and save as PNG
Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.
Updated on Jan 28 2021
Note: Ready for Apple ARM and macOS 11 Big Sur