You can use the convert command that comes with ImageMagick to extract parts of an image. You can cut out a 100-pixel-wide chunk from somewhere in the middle of an image: $ convert -crop 100x+0+0 orig ...
When you click a picture on your iPhone/iPad, it captures it in either JPG or HEIF format. On the other hand, if you take a screenshot, it’s saved as a PNG file. Or, if you download it from any social ...
There are many third-party apps available for Mac that will convert images for you, but if you're running macOS Monterey or later, you can convert an image or a selection of images from directly ...
There are many third-party apps available for Mac that will batch convert images for you (Permute is one example). And then there's Preview, the powerful file viewer that's built into macOS. Preview ...