Do I mind!? Mate, I am both flattered that you bothered and excited that you did! Much better. Thanks. Maybe I need to look at getting something that can apply filters to hide the nastyness when it happens.
My computer is on Linux and I use GIMP. It is like a mid weight version of Photoshop and easy to use. GIMP is also free for Windows as well.
This link has downloads for Windows, OSX and others.
https://www.gimp.org/downloads/