pngcheck

Install command: 
brew install pngcheck

Print info and check PNG, JNG, and MNG files

http://www.libpng.org/pub/png/apps/pngcheck.html

License: MIT AND GPL-2.0-or-later

Formula JSON API: /api/formula/pngcheck.json

Formula code: pngcheck.rb on GitHub

Bottle (binary package) installation support provided for:

macOS on
Apple Silicon		 tahoe ✅
sequoia ✅
sonoma ✅
ventura ✅
monterey ✅
big sur ✅
macOS on
Intel		 sonoma ✅
ventura ✅
monterey ✅
big sur ✅
catalina ✅
Linux ARM64 ✅
x86_64 ✅

Current versions:

stable ✅ 3.0.3

Analytics:

Installs (30 days)
pngcheck 156
Installs on Request (30 days)
pngcheck 156
Build Errors (30 days)
pngcheck 0
Installs (90 days)
pngcheck 383
Installs on Request (90 days)
pngcheck 383
Installs (365 days)
pngcheck 1,223
pngcheck --HEAD 1
Installs on Request (365 days)
pngcheck 1,220
pngcheck --HEAD 1