tldr/pages/common/pngcheck.md

pngcheck

Forensics tool for validating the integrity of PNG based (PNG, JNG, MNG) image files. Can also extract embedded images and text from a file. More information: https://github.com/pnggroup/pngcheck.

• Verify the integrity of an image file (width, height, and color depth):

pngcheck {{path/to/image.png}}

• Print information for an image with [c]olorized output:

pngcheck -c {{path/to/image.png}}

• Print [v]erbose information for an image:

pngcheck -cvt {{path/to/image.png}}

• Receive an image from stdin and display detailed information:

cat {{path/to/image.png}} | pngcheck -cvt

• [s]earch for PNGs within a specific file and display information about them:

pngcheck -s {{path/to/image.png}}

• Search for PNGs within another file and e[x]tract them:

pngcheck -x {{path/to/image.png}}