App support has very little to do with the operating system. OSes by and large will preview it just fine.
I meant Windows, as macOS and Linux are usually good with modern things. It’s trivial to add the support if you don’t have it. I have no idea about Windows, but I got this vibe of someone using Win7 in 2025 and complaining the world moved on and keeps moving on.
on the contrary. on macOS apps don't have to support image (or movie) formats. it is done by the system and transparently handled by the APIs. apps automatically gain new formats when the system adds it.