mogrify

Perform operations on multiple images, such as resizing, cropping, flipping, and adding effects.

Changes are applied directly to the original file.

• Resize all JPEG images in the directory to 50% of their initial size:

mogrify -resize {50%} {*.jpg}

• Resize all images starting with "DSC" to 800x600:

mogrify -resize {800x600} {DSC*}

• Convert all PNGs in the directory to JPEG:

mogrify -format {jpg} {*.png}

• Halve the saturation of all image files in the current directory:

mogrify -modulate {100,50} {*}

• Double the brightness of all image files in the current directory:

mogrify -modulate {200} {*}

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