PNGCHECK(1)

📦
version 4.0.1 · 7 versions
, in fedora 43, fedora 44, nixpkgs unstable

💖 PNGCHECK(1) 💖

User Commands · PNGCHECK(1)

okay bestie, welcome to pngcheck, literally the manual page for pngcheck 4.0.1 ✨

🌸 NAME 🌸

pngcheck — the manual page for pngcheck 4.0.1. that's it. that's the name section. she's simple, she's iconic 💅

🦋 SYNOPSIS 🦋

pngcheck [-7cpqtv] file.{png|jng|mng} [file2.{png|jng|mng} [...]]
... | pngcheck [-7cpqstvx]
pngcheck [-7cpqstvx] file-containing-PNGs...

✨ DESCRIPTION ✨

PNGcheck, version 4.0.1 of 12 December 2025, by Alexander Lehmann, Andreas Dilger, Greg Roelofs and Chris Lilley. 👑 the whole squad came together for this one.

So what does she do, you ask? She tests PNG, JNG or MNG image files for corruption, and prints size/type info. 🫶 like a vibe check but for your image files. no cap.

🎀 OPTIONS 🎀

  • -7 — prints the contents of tEXt chunks, and escapes chars >=128 (this one's for 7-bit terminals, iykyk 💜)
  • -c — colorizes the output (for ANSI terminals — so your terminal needs to be that girl 🌈)
  • -p — prints the contents of PLTE, tRNS, hIST, sPLT and PPLT (and yes, you can run this one with -q ✨)
  • -q — test quietly, meaning the output is only errors. silent but deadly 🍓
  • -s — search for PNGs within another file 🔍
  • -t — prints the contents of tEXt chunks (can be used with -q 💖)
  • -v — test verbosely, aka print most chunk data 📢
  • -vv — test very verbosely, aka decode & print line filters 😭 she's giving everything
  • -w — suppress the windowBits test (that's the more-stringent compression check) ⚠️
  • -x — search for PNGs within another file and extract them when found 🧚

💀 NOTE 💀

MNG support is more informational than conformance-oriented. so like… don't come for her about MNG conformance, she's just here to inform 🫶

pngcheck 4.0.1 · March 2025

and that's the whole page bestie!! pngcheck 4.0.1, March 2025, periodt. go forth and check those PNGs, JNGs and MNGs 💅✨🦋🌸🎀💖

📦 where this page comes from