Examine source code of RandPsw

{
  "manifest_version": 3,
  "name": "RandPsw",
  "version": "2.0.0",
  "description": "Random your password.",
  "icons": {
    "16": "icon_16.8de5ed2f.png",
    "48": "icon_48.ec3cc215.png",
    "128": "icon_128.8e8d9a9d.png"
  },
  "background": {
    "scripts": [
      "service_worker.b9809816.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "page.51670358.js"
      ],
      "all_frames": true,
      "css": [
        "page.d95ccd32.css"
      ]
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "action": {
    "default_icon": "lock.7c757739.png"
  },
  "content_security_policy": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "{e2127dd9-dccd-4d5e-a443-c9dd59e40257}",
      "strict_min_version": "110.0"
    }
  }
}