Yeah, I was just about to suggest embedding the code in a PNG text chunk: http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.3 http://www.libpng.org

Yeah, I was just about to suggest embedding the code in a PNG text chunk: http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.3 http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.d... Twitter etc should really already have standardised on a way to store the ALT text in an image so it only ever needs to entered once. Even GIF has support for text in a couple of different forms. ( Although I learned something new about PNG's support for GIF's text support here: http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.14 http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.d... ) ( I've spent far too long reading the GIF spec in relation to my project that adds audio to GIFs: http://audiogif.rancidbacon.com http://audiogif.rancidbacon.com :) )