Examine source code of Link Saver for developers

{
  "manifest_version": 2,
  "name": "Link Saver",
  "version": "3.0",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "img/icon16.ico",
      "48": "img/icon48.ico",
      "128": "img/icon128.ico"
    }
  },
  "icons": {
    "16": "img/icon16.ico",
    "48": "img/icon48.ico",
    "128": "img/icon128.ico"
  },
  "options_ui": {
    "page": "settings/options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{94c99705-4697-40f0-b181-bd42e0bb1a06}",
      "strict_min_version": "88.0"
    }
  }
}