PNG and MNG Tools
Pngmeta is a tool for extracting metadata from PNG (Portable Network Graphics) files.
Pngmeta is open source and may be used by anyone without fee.
The source code for pngmeta is in the pngmeta package here.
Precompiled binaries for several platforms are in the pngmeta-executables package here.
The CVS repository is at cvs.ilrt.org/cvsweb/png/pngmeta
The author of pngmeta is Dave Beckett,