ADVPNG(1)

🎀 advpng 🎀

General Commands Manual energy, bestie 💅 Here's the full tea on advpng, the PNG squishing tool that's literally so good at its one job.

✨ NAME ✨

advpng - AdvanceCOMP PNG Compression Utility 🌸

💻 SYNOPSIS 💻

advpng [-l, --list] [-z, --recompress] [-0, --shrink-0]
     [-1, --shrink-fast] [-2, --shrink-normal [-3, --shrink-extra]
     [-4, --shrink-insane] [-i, --iter N]
     [-f, --force] [-q, --quiet]
     [-h, --help] [-V, --version] FILES...

💖 DESCRIPTION 💖

okay so the main goal here is to recompress your PNG files so they end up the smallest possible size 🦋 it's giving tiny files, no cap.

Heads up, this tool is picky! It can't read just any file 🙈 It's only meant for files generated by the AdvanceMAME emulator. Anything else is not it.

To squish your files, it uses these strategies, and they're lowkey iconic 🔥

• Remove all ancillary chunks.
• Concatenate all the IDAT chunks.
• Use the 7zip Deflate implementation.

🌸 OPTIONS 🌸

• -l, --list FILES... — Shows you what's inside the files you pick 👀
• -z, --recompress FILES... — Recompresses the files you hand it 🔁 If you use -1, -2, or -3, it keeps whichever is smaller: the old compressed data or the new compression. If you use -0, the file always gets rewritten with no compression at all.
• -0, --shrink-store — Turns compression off entirely 🙅‍♀️ The file is just stored and never compressed.

Also, the file always gets rewritten, even if it ends up bigger. Bestie, be careful!

• -1, --shrink-fast — Sets the compression level to "fast" using the zlib compressor ⚡
• -2, --shrink-normal — Sets the compression level to "normal" using the libdeflate compressor 💅 This is the default level of compression, so it's your go-to.
• -3, --shrink-extra — Sets the compression level to "extra" using the 7z compressor ✨ You can tell it how many iterations to run with the -i, --iter option.
• -4, --shrink-insane — Sets the compression level to "insane" using the zopfli compressor 🔥 You can also set the iterations with the -i, --iter option.
• -i, --iter N — Adds extra iterations for the 7z and zopfli compressors in modes -3 and -4 🧚 More iterations usually means better compression, but it can take a whole lot more time. Try stuff like 10, 15, 20, and so on.
• -f, --force — Uses the new file even if it's bigger 💀

This one's a bit risky, so only use it if you really mean it!

🧚 COPYRIGHT 🧚

This file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima 🫶

🦋 SEE ALSO 🦋

advzip(1), advmng(1), advdef(1) 💜

That's the whole page, bestie! 💅 Signing off with AdvanceCOM...ion Utility(1) 🌈 you're literally the best ✨