toby_kelsey at ntlworld.com
Thu Jan 26 13:14:57 UTC 2006
Duncan Lithgow wrote:
> Does anyone know what can write metadata in a png file?
> I'm looking for a good way of embedding information about some
> historical images _into_ the image itself - so they never get seperated
> from each other.
> Suggestions anyone?
I don't think there is a standard convention for adding comments in png, although
http://en.wikipedia.org/wiki/PNG mentions the 'iTXt', 'tEXt' and 'zTXt' chunks.
The 'convert' program can add comments for 'supported formats', whether this includes PNG I don't know.
A google search found these relevant pages:
There is one program 'pngmeta', which can handle metadata and might do what you want:
Let us know how you get on.
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