Re: exif data in PNG?

> is there a PNG chunk type defined for Exif data?

> If not, is there any reason for not having it?

That's an old problem of self-documentation for PNG images. The PNG
specification allows labeled text (ASCII or UTF-8) elements to be
embedded in text chunks and predefines a few standard keywords
(element labels): Title, Author, Description, Copyright, Creation
Time, Software, Disclaimer, Warning, Source, Comment but not in Exif
format . An attempt in 2000 to develop open source tools to convert
EXIF images (including EXIF metadata) to PNG seems to have been
abandoned. See


Received on Wednesday, 20 June 2007 15:33:16 UTC