If he runs out of file formats, he could move on to protocols...
It also seems to be less expensive than options like Office Depot, too.
Does anybody have any suggestions on how to get these printed as full-sized posters?
This one is great. Nothing as using crypto wrong so that it becomes useless.
Nowadays, with widespread APIs, the file formats' significance is almost irrelevant! In theory, only a single person in the world needs to know any file format. Everyone else can use a library they've written.
my how the world changes :)
For example, For many years I developed and maintained several libraries for high performance media type detection - libraries aren't applicable there. Similarly is for Dara extraction - sometimes you need to have tradeoffs between performance and other parameters, while libraries are optimized for average case.
The JPEG/EXIF format itself is a mess, just a completely horrible design. It's one of those old-school file formats like MS Word .doc which isn't so much of a "format" as modern programmers commonly understand the term but more like a straight dump of memory chunks into a file. That's not so bad if you're programming in C but surprisingly difficult in higher-level safe languages like Java.
Second, the JPEG/EXIF format is just needlessly complex regardless of language. Instead of marking metadata locations using something sensible like delimiters it's essentially a whole file system within the file with directories and directory entries. The values of some directory entries aren't storied there directly but instead pointed to by a byte offset value. So if you want to insert another entry you have to recalculate all the offsets! Even using C it's easy to screw that up and corrupt the whole file.
This made me chuckle.