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.
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.
That doesn’t mean it’s dead, it rather shows sheer incompetence of the web dev departments of these wonderful companies for whom webp or avif aren’t images, I guess.
I was about to write that Slack doesn't support webp but I just tested it and it does. For years I have been typing "convert file.webp file.jpg" and then posting that in slack but it looks like they have added support.
Or convert before you upload because the image host has delusions about fighting the Google monoculture by refusing WebP support. Even more of a head scratcher when WebM is their only video format.