Examine source code of Imgkk.com Remote Upload

{
  "manifest_version": 2,
  "name": "Imgkk.com Remote Upload",
  "version": "2.1resigned1",
  "description": "Quickly and easily remote upload images to imgkk.com",
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "imgkk.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{35d94d9f-bf30-4ab1-9412-9fe0c860cb42}"
    }
  }
}