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optipng

PNG image file optimization utility.

Compress a PNG with default settings:

optipng {{path/to/file.png}}

Compress a PNG with best compression:

optipng -o{{7}} {{path/to/file.png}}

Compress a PNG with fastest compression:

optipng -o{{0}} {{path/to/file.png}}

Compress a PNG and add interlacing:

optipng -i {{1}} {{path/to/file.png}}

Compress a PNG and preserve all metadata (including file timestamps):

optipng -preserve {{path/to/file.png}}

Compress a PNG and remove all metadata:

optipng -strip all {{path/to/file.png}}