Lots of filters available for GIMP
Most I never bothered with before
Test it and see.
Make the image 20% different.
Each of these images is just one click, and if I don't like the result, CTRL-Z undo, or change some sliders.
Different anons have different graphics tools they prefer.
Probably so. I'm just exploring to see what filters I have installed. It was a package install with hundreds of options, most of which I have not used before.
Each filter can be tweaked too to produce a different appearance.
Q'MIC-Qt filter package for gimp
Web search Q'MIC-Qt will find it for ya.
Not that I know of.
https://www.gimp.org/
GNU Image Manipulation Program
It's a very mature program.
gimp is NOT a steganography program.
You are thinking of something else.
It's an image processing app like Photoshop.