Follow websites (RSS Reader)

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Follow websites (RSS Reader)",
  "version": "0.1.4",
  "description": "Follow any website which offers an RSS feed and decide how to receive messages, i.e. via Email, Telegram etc.",
  "icons": {
    "16": "img/icons/icon-16.png",
    "48": "img/icons/icon-48.png",
    "128": "img/icons/icon-128.png"
  },
  "background": {
    "service_worker": "background/index.js"
  },
  "content_scripts": [
    {
      "all_frames": false,
      "js": [
        "browser-polyfill.min.js",
        "content/index.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "img/icons/icon-48.png"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "externally_connectable": {
    "matches": [
      "https://follow.it/*",
      "https://*.follow.it/*"
    ]
  },
  "manifest_version": 3
}