DOT-Files/Gentoo/gentooamd/home/user/.tldrc/tldr/pages/common/oxipng.md

oxipng

Losslessly improve compression of PNG files. More information: https://manned.org/oxipng.

• Compress a PNG file (overwrites the file by default):

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

• Compress a PNG file and save the output to a new file:

oxipng --out {{path/to/output.png}} {{path/to/file.png}}

• Compress all PNG files in the current directory using multiple threads:

oxipng "*.png"

• Compress a file with a set optimization level (default is 2):

oxipng {{[-o|--opt]}} {{0|1|2|3|4|5|6|max}} {{path/to/file.png}}

• Set the PNG interlacing type (0 removes interlacing, 1 applies Adam7 interlacing, keep preserves existing interlacing; default is 0):

oxipng {{[-i|--interlace]}} {{0|1|keep}} {{path/to/file.png}}

• Perform additional optimization on images with an alpha channel:

oxipng {{[-a|--alpha]}} {{path/to/file.png}}

• Use the much slower but stronger Zopfli compressor with max optimization:

oxipng {{[-Z|--zopfli]}} {{[-o|--opt]}} max {{path/to/file.png}}

• Strip all non-critical metadata chunks:

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