In theory (2^31)-1-1-1 bytes (max chunk data size is (2^31)-1 and keyword must be one char and then one null byte), but the recommendation is no more than 1024 characters.
/ Martin Nilsson (bygger parser
Previous text:
2003-01-07 01:02: Subject: PNG
*curious* Is there a limit to the amount of text that you can store in a PNG-image? I have a real bad need to store image regions (who the people in the image are) and a wrapper seems like an unnecessarily bad thing..
/ Peter Lundqvist (disjunkt)