Examine source code of Notee

{
  "manifest_version": 2,
  "name": "Notee",
  "version": "2.0.0",
  "description": "Take and save notes without leaving your browser.",
  "browser_specific_settings": {
    "gecko": {
      "id": "notee@dac-addons",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "notee16.png",
      "48": "notee48.png",
      "128": "notee128.png"
    }
  },
  "icons": {
    "16": "notee16.png",
    "48": "notee48.png",
    "128": "notee128.png"
  },
  "permissions": [
    "storage",
    "contextMenus",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}