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37 lines
1 KiB
Markdown
37 lines
1 KiB
Markdown
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# oxipng
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> Losslessly improve compression of PNG files.
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> More information: <https://github.com/shssoichiro/oxipng>.
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- Compress a PNG file (overwrites the file by default):
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`oxipng {{path/to/file.png}}`
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- Compress a PNG file and save the output to a new file:
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`oxipng --out {{path/to/output.png}} {{path/to/file.png}}`
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- Compress all PNG files in the current directory using multiple threads:
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`oxipng "*.png"`
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- Compress a file with a set optimization level (default is 2):
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`oxipng --opt {{0|1|2|3|4|5|6|max}} {{path/to/file.png}}`
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- Set the PNG interlacing type (`0` removes interlacing, `1` applies Adam7 interlacing, `keep` preserves existing interlacing; default is `0`):
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`oxipng --interlace {{0|1|keep}} {{path/to/file.png}}`
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- Perform additional optimization on images with an alpha channel:
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`oxipng --alpha {{path/to/file.png}}`
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- Use the much slower but stronger Zopfli compressor with max optimization:
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`oxipng --zopfli --opt max {{path/to/file.png}}`
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- Strip all non-critical metadata chunks:
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`oxipng --strip all {{path/to/file.png}}`
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