pwa

pwa(progressive web app) is an app that can be installed via a browser on windows, android, etc.
to enable the offline operation for this, you must register the service worker and cache resources.

example

pwa/TOTPGenerator/manifest.json

if display doesn't support the specified mode, it'll fall back in order fullscreen, standalone, minimal-ui, browser.

short_name may be used when name can't be displayed in full.