https://www.tetizeraz.com.br/ has a profile picture that “weights” some 700 KB. However, it takes some time to load from what I see and what a friend said. I then read about Git LFS, and I’m wondering if that could work. However, if I were to use Git LFS, would I still be able to use Forestry.io to add images to my repository, or it doesn’t work like that?
You could use Git LFS, Cloudinary, ImageKit, or other image provider to host full-size images, and load them at the required size on your page. How these work with Forestry I cannot say.