They can "mostly" be fairly easily reduced down to 512, 256, ect... if you happen to be doing smaller scale work. Color, ambient, metallic, normal, height, and roughness are all provided independently, so you can pick and choose what you need.
Already tried a few as conversions for textures on 16x16 or 32x32 tiles, and while obviously smeared really badly, they still work. You can still make a castle wall in a SNES game starting from a 1k source of stacked stone blocks.
https://images.sharetextures.com/u/pavement_16_normal.webp
They can "mostly" be fairly easily reduced down to 512, 256, ect... if you happen to be doing smaller scale work. Color, ambient, metallic, normal, height, and roughness are all provided independently, so you can pick and choose what you need.
Already tried a few as conversions for textures on 16x16 or 32x32 tiles, and while obviously smeared really badly, they still work. You can still make a castle wall in a SNES game starting from a 1k source of stacked stone blocks.