Examine source code of Amazing Marvin

{
  "manifest_version": 3,
  "name": "Amazing Marvin",
  "description": "Amazing Marvin Browser Extension",
  "version": "0.6.1",
  "icons": {
    "16": "logo2.1e233ac4.png",
    "48": "logo2.1e233ac4.png",
    "128": "logo2.1e233ac4.png"
  },
  "action": {
    "default_icon": "logo2.1e233ac4.png",
    "default_title": "Amazing Marvin",
    "default_popup": "popup.a2e1f647.html"
  },
  "options_ui": {
    "page": "options.fd91bb65.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://mail.google.com/*"
      ],
      "js": [
        "gmail.e80e114b.js"
      ],
      "css": []
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "successMessage.139fea52.js"
      ],
      "css": []
    }
  ],
  "background": {
    "scripts": [
      "background.c95fb148.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "static/logo.png",
        "static/inboxlist.png",
        "static/singleemail.png",
        "static/marvinhello.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "host_permissions": [
    "https://serv.amazingmarvin.com/api/*"
  ],
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "browserextension@amazingmarvin.com"
    }
  }
}