PNG converter and lossy image compressor. More information: <https://pngquant.org/>.

• Compress a specific PNG as much as possible and write result to a new file:
  pngquant path/to/file.png
• Compress a specific PNG and override original:
  pngquant --ext .png --force path/to/file.png
• Try to compress a specific PNG with custom quality (skip if below the min value):
  pngquant --quality 0-100 path/to/file.png
• Compress a specific PNG with the number of colors reduced to 64:
  pngquant 64 path/to/file.png
• Compress a specific PNG and skip if the file is larger than the original:
  pngquant --skip-if-larger path/to/file.png
• Compress a specific PNG and remove metadata:
  pngquant --strip path/to/file.png
• Compress a specific PNG and save it to the given path:
  pngquant path/to/file.png --output path/to/file.png
• Compress a specific PNG and show progress:
  pngquant --verbose path/to/file.png

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