Protocol handlersThe protocol_handlers web app manifest member registers an installed web app as a handler for a specific protocol. When a user follows a link with the specified protocol, the installed app opens the link.progressive-web-appProgressive web applimitedhttps://wicg.github.io/manifest-incubations/#protocol_handlers-memberhttps://developer.mozilla.org/docs/Web/Progressive_web_apps/Manifest/Reference/protocol_handlersmanifests.webapp.protocol_handlersmanifests.webapp.protocol_handlers.protocolmanifests.webapp.protocol_handlers.urlhttps://nowyoucanuse.com/features--app-protocol-handlers.html