Examine source code of Binary Flipper

{
  "manifest_version": 2,
  "name": "Binary Flipper",
  "version": "1.0",
  "description": "Converts between binary and decimal.",
  "permissions": [],
  "browser_action": {
    "default_icon": "thumbnail.png",
    "default_popup": "popup.html",
    "default_title": "Convert"
  },
  "icons": {
    "48": "thumbnail.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c288174b-e842-43cf-a714-6d6332516413}"
    }
  }
}