If you’re looking for lossless PNG compression in a simple utility, PNG Compressor for the Mac is a utility designed for quickly dragging a folder or group of images into the icon or onto the window ...

Step 1: Find the image you want to convert. This can be anywhere on your Mac—Desktop, Downloads, or Documents. For this ...

Many images and graphics, however, come in a PNG format — most notably screenshots. Luckily, with the Preview program that comes with your Mac computer you can convert a PNG to a JPEG.