Examine source code of Mon faster

{
  "manifest_version": 2,
  "name": "Mon Extension Test",
  "version": "1.0",
  "description": "Une extension pour tester.",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6709a5f0-ba89-4f34-817c-2af544eafad2}"
    }
  }
}