If you have a Nvidia GPU, I've been using Upscayl locally and for free with decent results: https://github.com/upscayl/upscayl https://github.com/upscayl/upscay

If you have a Nvidia GPU, I've been using Upscayl locally and for free with decent results: https://github.com/upscayl/upscayl https://github.com/upscayl/upscayl Note that on some image types it tends to make things look digitally painted rather than detailed. I recommend you try a few different tools and see what works best for the type of photography you do.