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ImageOptim is a powerful image lossless compression tool software that provides lossless compression services for PNG images, reducing file size by 60%-90%.

ImageOptim makes images load faster ... Removes bloated metadata. Saves disk space & bandwidth by compressing images without losing quality. ... Requires macOS 11+.

Click the Format pop-up menu, then choose a file type. If you don't see the file type you want, press and hold the Option key and click the Format pop-up menu ...

Flip the image: Click Flip to flip the image horizontally. Option-click to flip the image vertically. Straighten the photo: Drag the Straighten, Vertical ...

In Photos on your Mac, choose settings for viewing and importing photos, using iCloud Photos and iCloud Shared Photo Library, and more.

To rotate the image to the right, press and hold the Option key and click Rotate Right tool until you're done rotating the image. Flip an image: Choose ...