An efficient way to detect corrupted png files?

Question

I've written a program to process a bunch of png files that are generated by a seperate process. The capture mostly works, however there are times when the process dies and is restarting which leaves a corrupted image. I have no way to detect when the process dies or which file it dies one (there are ~3000 png files).

Is there a good way to check for a corrupted png file?

Answer 1

I know this is a question from 2010, but I think this is a better solution: pngcheck.