Examine source code of Raindrop Bookmark Sync

{
  "manifest_version": 2,
  "name": "Raindrop Bookmark Sync",
  "version": "1.0.0",
  "description": "Two-way sync between Firefox bookmarks and Raindrop.io",
  "permissions": [
    "bookmarks",
    "storage",
    "alarms",
    "https://api.raindrop.io/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "Raindrop Sync",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "raindrop-bookmark-sync@victorkasap",
      "strict_min_version": "91.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}