Examine source code of Gift List Registry

{
  "manifest_version": 3,
  "name": "Gift List — Save to Registry",
  "version": "1.0.1",
  "description": "Save any product you find online straight to your Gift List registry — one click, no copy-pasting.",
  "author": "Gift List",
  "homepage_url": "https://giftlist.ca",
  "permissions": [
    "storage",
    "tabs",
    "notifications",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "https://giftlist.ca/*",
    "https://*/*",
    "http://*/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Save to Gift List",
    "default_icon": {
      "16": "images/icon-16.png",
      "48": "images/icon-48.png",
      "128": "images/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "windows": "Ctrl+Shift+G",
        "mac": "Command+Shift+G",
        "chromeos": "Ctrl+Shift+G",
        "linux": "Ctrl+Shift+G"
      },
      "description": "Open Gift List popup"
    },
    "quick-save": {
      "suggested_key": {
        "windows": "Alt+G",
        "mac": "Alt+G",
        "chromeos": "Alt+G",
        "linux": "Alt+G"
      },
      "description": "Quick-save current page to your default registry"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "giftlist@giftlist.ca",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ],
        "optional": [
          "websiteContent"
        ]
      }
    }
  }
}