Examine source code of ShowPass

{
  "manifest_version": 3,
  "name": "ShowPass",
  "version": "1.0.0",
  "description": "Show or copy password field values from the context menu and keyboard shortcuts.",
  "homepage_url": "https://github.com/mparvin/chrome-showpass",
  "browser_specific_settings": {
    "gecko": {
      "id": "showpass@mparvin.github.io",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "ShowPass",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "permissions": [
    "contextMenus",
    "clipboardWrite"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "commands": {
    "show-password": {
      "suggested_key": {
        "default": "Alt+Shift+S",
        "mac": "Alt+Shift+S"
      },
      "description": "Toggle password visibility"
    },
    "copy-password": {
      "suggested_key": {
        "default": "Alt+Shift+C",
        "mac": "Alt+Shift+C"
      },
      "description": "Copy password field value"
    }
  },
  "default_locale": "en"
}