New? PNG Chunk Type

I was not successful clicking on the PNG-EXTENSIONS link.  It was 
supposed to provide "PNG 1.2 Specification, Version 1.2.0".

What I need is the ability to store the location of the camera so that I 
know which of several background images was used.  I already know the 
day the image was taken, but, I need to know which background was used 
that day for that camera for that picture.  In my case the background on 
any particular day is the same for the location.  As an alternative I 
could store the name of the background image - I would simply include 
the location name in the background image name.

Received on Tuesday, 21 March 2017 22:06:11 UTC