Examine source code of SpeedKey Launcher

{
  "manifest_version": 2,
  "name": "SpeedKey",
  "version": "2.2.1",
  "description": " Hotkey based speed dial launcher for your bookmarks and more.",
  "author": "Terry Schneider",
  "icons": {
    "12": "assets/icons/icon12.png",
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "64": "assets/icons/icon64.png",
    "128": "assets/icons/icon128.png",
    "256": "assets/icons/icon256.png",
    "512": "assets/icons/icon512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{53d40c16-38d4-4454-bf17-bc88a10151b2}"
    }
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": {
      "16": "assets/icons/icon16.png",
      "32": "assets/icons/icon32.png"
    },
    "default_title": "Speedkey",
    "default_popup": "src/html/popup.html"
  },
  "content_security_policy": "default-src 'self'",
  "web_accessible_resources": [
    "assets/icons/*.svg"
  ],
  "background": {
    "scripts": [
      "lib/fuse.js",
      "src/js/constants.js",
      "src/js/settings.js",
      "src/js/background.js"
    ]
  },
  "options_ui": {
    "page": "src/html/options.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Space"
      },
      "description": "Open/close the launcher."
    }
  },
  "permissions": [
    "topSites",
    "bookmarks",
    "tabs",
    "search",
    "activeTab",
    "storage",
    "cookies",
    "contextualIdentities"
  ]
}