PNGCHUNKDESC(1)

✨ NAME ✨

pngchunkdesc — bestie, this little cutie decodes the info that's hidden inside a PNG chunk name 💅

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🌸 SYNOPSIS 🌸

pngchunkdesc

that's it. that's the whole vibe. no flags, no args, just vibes and stdin 🫶

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🦋 DESCRIPTION 🦋

okay so picture this: PNG files aren't just one big blob of pixels, they're built around a whole series of chunks, and those chunks are literally what hold all the information stored in the image file. main character energy fr fr.

every chunk has a four character ASCII name. and here's the iconic part — the case of each letter stores additional information 👑 like, uppercase vs lowercase is not a style choice, it's data. iykyk.

this program decodes that case information in the chunk names and displays it. simple as that, no cap.

the way it works:

• it reads chunk names from stdin
• it writes chunk descriptions to stdout

so you pipe stuff in, you get the tea out. periodt. 🍓

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💖 SEE ALSO 💖

• tiffinfo(1)
• pnginfo(1)

go say hi to the cousins ✨

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🌈 VERSION 🌈

this documentation is for pngtools 1.0 🎀

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👑 AUTHOR 👑

pngtools was written by Michael Still and is released under the GNU GPL. the project is hosted at https://github.com/mikalstill/pngtools — go give it a star, it deserves it 🫶

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💀 BUGS 💀

found something cursed? not me getting jumpscared by a bug 😭 please report bugs at https://github.com/mikalstill/pngtools/issues — they'll fix it, slay.

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and that's the whole page, bestie!! this one's from the User Commands section of the manual, dated 10 June 2026, and it's documenting pngtools 1.0 — PNGCHUNKDESC(1), we love her, we stan, bye 💖✨🎀