All sorts of ways and all depends on the image. PS content aware fill often equated with resynthesizer + plugins
For small areas resynthesizer + heal transparency can work.
For the example you gave, those horizontal bands, a simple copy of as much as possible, a paste, then horizontal flip to match any shading often works.
An alternative is the liquid rescale plugin. Careful with this, might need a couple of applications and not suitable for all occasions (but then what is)
quick example https://i.imgur.com/H67C7dx.mp4
see: https://www.gimp-forum.net/Thread-Liquid...8#pid14658 for a zipped plugin
(note: broken for Gimp 2.10.18 At the moment Gimp 2.10.14 is a better bet anyway)
If you give an example of the image you want to scale you will get a better reply
For small areas resynthesizer + heal transparency can work.
For the example you gave, those horizontal bands, a simple copy of as much as possible, a paste, then horizontal flip to match any shading often works.
An alternative is the liquid rescale plugin. Careful with this, might need a couple of applications and not suitable for all occasions (but then what is)
quick example https://i.imgur.com/H67C7dx.mp4
see: https://www.gimp-forum.net/Thread-Liquid...8#pid14658 for a zipped plugin
(note: broken for Gimp 2.10.18 At the moment Gimp 2.10.14 is a better bet anyway)
If you give an example of the image you want to scale you will get a better reply