Examine source code of SPRL Link Shortener

{
  "manifest_version": 3,
  "name": "SPRL Link Shortener",
  "version": "1.1.0",
  "description": "Easy Link Shortener with advance tracking",
  "icons": {
    "16": "img/sprlicon16.png",
    "32": "img/sprlicon32.png",
    "64": "img/sprlicon64.png",
    "128": "img/sprlicon128.png"
  },
  "action": {
    "default_title": "Short Link with SPRL",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "permissions": [
    "storage",
    "scripting",
    "contextMenus",
    "activeTab"
  ],
  "host_permissions": [
    "https://insprl.com/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@insprl.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}