Package: pngcrush Version: 1.8.13-0.1 There's been an option "-ow" to overwrite the input file since 1.7.22, but I missed it as it's not mentioned in the Debian man page. (It is mentioned in the usage message.)
I haven't checked to see if the man page might be out of date in other ways too. I'm on buster, but I also checked pngcrush.sgml in the latest package from unstable and the master branch on salsa.
