Examine source code of Stable Pass

{
  "manifest_version": 3,
  "name": "Stable Pass",
  "author": "Leo Durillon",
  "version": "0.0.1",
  "description": "Derive strong, unique passwords from a simple one — nothing stored, nothing sent.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0156838a-a333-4553-bc45-1c5e746a43b7}",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "index.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "show_matches": [
      "<all_urls>"
    ],
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "Stable Pass",
    "default_popup": "popup/index.html"
  }
}