Hey! I’m not sure if this is exactly what your are looking for, but I use Inkscape for all my vector graphics needs. It does have a trace function to help convert raster images into vector, which might help. And you can do CTRL+L to simplify it. I have used it for creating SVGs for a vynal cutter, which might be similar to what you are doing? I’ve used it on Linux, Mac and Windows without much issue… but there might be a little learning curve.
Good luck!
Hey this could be cool! But I’m getting inconsistent results. I can not seem to reveal the message on Android in the Chrome browser (or any other browser). On mac I can reveal the first image and get a second, but I am unable to reveal the message in the second image no matter what I do. I’ve tried with passlok.com/stego and the Firefox plugin, but always get “This image does not contain anything, or perhaps the password is wrong”. I assume that the second image is rendering properly (a maze-ish pattern?), but I guess it could be corrupted somehow?