Examine source code of Stream Link+

{
  "name": "The Stream Detector",
  "version": "2.11.7",
  "description": "__MSG_extText__",
  "manifest_version": 2,
  "default_locale": "en",
  "permissions": [
    "<all_urls>",
    "clipboardWrite",
    "downloads",
    "notifications",
    "storage",
    "tabs",
    "webRequest"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "img/icon-dark-16.png",
    "48": "img/icon-dark-48.png",
    "96": "img/icon-dark-96.png"
  },
  "commands": {
    "open-popup": {
      "description": "__MSG_openPopup__"
    },
    "open-sidebar": {
      "description": "__MSG_openSidebar__"
    }
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "default_title": "The Stream Detector",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "img/icon-dark-16.png",
      "48": "img/icon-dark-48.png"
    },
    "theme_icons": [
      {
        "dark": "img/icon-dark-96.png",
        "light": "img/icon-light-96.png",
        "size": 96
      },
      {
        "dark": "img/icon-dark-48.png",
        "light": "img/icon-light-48.png",
        "size": 48
      },
      {
        "dark": "img/icon-dark-16.png",
        "light": "img/icon-light-16.png",
        "size": 16
      }
    ]
  },
  "sidebar_action": {
    "default_title": "The Stream Detector",
    "default_panel": "sidebar.html",
    "default_icon": {
      "16": "img/icon-dark-16.png",
      "48": "img/icon-dark-48.png"
    },
    "open_at_install": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3dc7c96d-2379-4bb1-8199-ed7050d7fee8}"
    }
  }
}