Examine source code of Local Note

{
  "manifest_version": 2,
  "name": "Local Note",
  "version": "1.3.2",
  "description": "store notes locally",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content-scripts": [
    {
      "matches": "*://*/*",
      "js": [
        "static/js"
      ],
      "all_frames": true
    }
  ],
  "sidebar_action": {
    "default_panel": "index.html",
    "default_title": "Local Note",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "open_at_install": true
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/icon-19.png",
      "38": "icons/icon-38.png"
    },
    "default_title": "Local Note"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "toggle.js"
    ]
  }
}