> For PNG the following link might be interesting: > > http://www.w3.org/TR/2003/REC-PNG-20031110/#11textinfo > also: http://pmt.sourceforge.net/exif/drafts/d020.html (abandoned) http://owl.phy.queensu.ca/~phil/exiftool/ (active) -- Christopher St. John http://artofsystems.blogspot.com