How can I add metadata to an image?

Question

Where does one insert meta data into and image file and what it the mark up to do so? i want to do this with php.

Answer 1

You can use image libraries like imagemagick

http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=20183

There is another tool I know named Jhead which can retieve and modify some metadata if images

http://www.sentex.net/~mwandel/jhead/