Examine source code of Papyrus fonte

{
  "manifest_version": 2,
  "name": "Papyrus fonter",
  "description": "Fun font extension",
  "version": "0.1.0",
  "icons": {
    "16": "icon/icon16.png",
    "32": "icon/icon32.png",
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{e5fbaac4-1261-4c25-801a-738e648512e9}"
    }
  },
  "browser_action": {
    "default_title": "Default Popup Title",
    "default_popup": "popup.html"
  }
}