pngtools

In the early 2000s I was in my mid 20s, working a dead end job as a Windows programmer, and had two very young kids who were not super good at sleeping. I had worked as what I would now call a systems programmer for the Australian patents and trade marks office for a few years in the late 1990s doing low level image manipulation code -- we had a for the time quite impressive database of scanned images of patents and trademarks, and sometimes we need to do things like turn them into PDFs or import a weird made up image format from the Japanese patents office. So when you combined those things -- previous experience in a field I found interesting, a job I did not currently find interesting, and a lot of spare time very early in the morning because the kids wouldn't sleep but my wife really did need a rest -- you end up with a Michael who spent a lot of time writing image manipulation code on his own time. Even back then I was pretty into Open Source, so I released what I think was probably the first Open Source PDF generation library,…