pngcheck

v 3.0.3 Updated: 1 month, 2 weeks ago

validate and inspect PNG, JNG and MNG files

pngcheck verifies the integrity of PNG, JNG and MNG files (by checking the internal 32-bit CRCs and decompressing the image data); it can optionally dump almost all of the chunk-level information in the image in human-readable form. For example, it can be used to print the basic statistics about an image (dimensions, bit depth, etc.); to list the color and transparency info in its palette (assuming it has one); or to extract the embedded text annotations. This is a command-line program with batch capabilities.

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

To install pngcheck, paste this in macOS terminal after installing MacPorts

sudo port install pngcheck

Add to my watchlist

Installations 5
Requested Installations 5