Are there websites where you can try such GAN-magic image editing conveniently online with a GUI, so without having to install software, needing programming knowledge or having to pay?
Using Colab isn't that bad - you can figure it out with some basic Python at worst, assuming their notebook extracts faces automatically.
I wish these tools would work with StyleGAN3; the earlier versions have some obvious artifacts where eyes/nose/mouth look 2D/"pasted on" even if the face is at an angle. Also, you can see in the examples here that the hair style editing is not good.
If StyleGAN3 is just StyleGAN with anti-aliasing, I feel there should be post-processing effect pass to smooth discontinuities. Lots of commercial 2D image filters in the wild exhibit pixel artifacts. And a simple averaging blur is enough to compensate. I wonder if there is something equivalent ;)
Not really, you need to install things, know how to program, and probably pay for GPU compute. Even with Colab (which is an ok choice if you don't own a beefy GPU; the consumer Nvidia cards--if you can get them--don't have enough RAM these days so colab seems most subsidized).
The real (fatal) problem with Colab is you write a bunch of code that needs decent system specs and they suddenly bump you down to a shitty system and now your code doesn't work, even when you're paying their newest "Plus Plus Max" membership. They keep adding membership tiers and it barely works. Still the cheapest option.
I wish these tools would work with StyleGAN3; the earlier versions have some obvious artifacts where eyes/nose/mouth look 2D/"pasted on" even if the face is at an angle. Also, you can see in the examples here that the hair style editing is not good.