What?

Those are called Progressive Web Apps (PWA). You can use firefox to add the website to your desktop like this: https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Guides/Installing

Once you do, when you open the app it should have just the website without the tabs and everything else firefox does.

Significantly better than several hours od most of the internet being down.

Breezy Weather

Not affiliated, just discovered this amazing app relatively recently.

Breezy Weather

Breezy Weather

This isn’t foolproof. A lot of malware these days is resistant to analysis because they can detect that they’re running in a sandbox and refuse to run the malicioua code.