Examine source code of Pinport - Bookmark Manager

{
  "manifest_version" : 3 ,
  "name" : "Pinport - Bookmark Manager",
  "description" : "Save and find your bookmarks with Pinport. Subscription required; 7-day free trial for new accounts.",
  "version" : "6.1.4",
  "homepage_url" : "https://pinport.app",
  "author": "Pinport",
  "permissions" : [
    "activeTab" ,
    "contextMenus" ,
    "storage" 
  ],
  "optional_permissions" : [
    "tabs" ,
    "bookmarks" ,
    "clipboardRead" 
  ],
  "host_permissions" : [
    "https://pinport.app/*" 
  ],
  "icons" : {
    "16" : "icon.png",
    "32" : "icon.png",
    "48" : "icon.png",
    "128" : "icon.png"
  },
  "action" : {
    "default_title" : "Open Pinport",
    "default_icon" : {
      "16" : "icon.png",
      "32" : "icon.png"
    }
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ],
    "type" : "module" 
  },
  "content_scripts" : [
    {
      "matches" : [
        "https://pinport.app/*" 
      ],
      "js" : [
        "connection-content.js" 
      ],
      "run_at" : "document_start" 
    }
  ],
  "content_security_policy" : {
    "extension_pages": "script-src 'self'; object-src 'none'; connect-src 'self' https://pinport.app https://identitytoolkit.googleapis.com https://securetoken.googleapis.com https://www.googleapis.com; frame-src 'none'"
  },
  "omnibox": {
    "keyword": "p"
  },
  "commands" : {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+Shift+P"
      }
    }
  },
  "sidebar_action": {
    "default_title" : "Pinport",
    "default_panel": "panel.html",
    "default_icon" : "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox-addon@bookmarkmanager.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity",
          "personallyIdentifyingInfo",
          "searchTerms",
          "websiteContent"
        ]
      }
    }
  }
}