Examine source code of Bookmark Saver

{
  "manifest_version": 2,
  "name": "Bookmark Saver",
  "version": "1.0.0",
  "description": "A simple Firefox add-on to save and view bookmarks.",
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/icon48.png",
      "96": "icons/icon96.png"
    },
    "default_title": "Bookmark Saver",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3dd7cb7e-5a2d-4149-9b0f-0704ab059e3f}"
    }
  }
}