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optipng

PNG file optimization utility.

More information.

• Compress a PNG with default settings:

optipng {path/to/file.png}

• Compress a PNG with the best compression:

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

• Compress a PNG with the 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}

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