PNG-FIX-IDAT-WINDOWSIZE(1)

💅 PNG-FIX-IDAT-WINDOWSIZE 💅

okay bestie, so this is the manual for png-fix-IDAT-windowsize — a lil Unix utility (from the User Commands section, section 1, iykyk) and honestly? it does exactly one thing and it does it flawlessly. ✨

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🌸 NAME 🌸

png-fix-IDAT-windowsize — a utility to reset first IDAT's zlib window-size bytes and fix up CRC to match. 🎀

like. that's the whole gig. it goes in, it resets those first IDAT zlib window-size bytes, and it fixes the CRC so everything matches up. no cap. 💅

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🦋 SYNOPSIS 🦋

png-fix-IDAT-windowsize [options] pngfile [pngfile ...]

so you just hand it a pngfile (or honestly, as many pngfiles as your heart desires, it takes [pngfile ...]), plus whatever [options] you want, and it does the thing. 🫶

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✨ DESCRIPTION ✨

okay so, this is png-fix-IDAT-windowsize, version 1.0 of 31 October 2020, by Greg Roelofs. 👑

here's the tea: it uses explicit, hardcoded compression settings and line filters — like, no guessing, no vibes-based compression, just set-in-stone choices — and it writes the result to an output file with the extension "-fixed.png". 🎀

⚠️ real talk: this software is licensed under the GNU General Public License. there is NO warranty. like, none. zero. nada. so don't come for anyone if it goes sideways. 😭

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💖 OPTIONS 💖

• -force — overwrite existing output files. aka, yes, it will absolutely stomp on a file that's already there, but only if you say so. 🙈
• -verbose — print more status messages, so you can watch it cook. (synonym: -noquiet) 👀

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🌈 SEE ALSO 🌈

• pngcheck(1)
• pngsplit(1)

go give them a lil visit, they're iconic too. 💜

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and that's the whole page, bestie!! this was png-fix-IDAT-windowsize 1.0, from October 2020 — main character energy, one job, zero notes. mwah. 💅✨🎀🦋🌸🫶💖