Examine source code of Copyfish

{
  "background": {
    "service_worker": "scripts/background.js",
    "scripts": [
      "scripts/genlib.js",
      "scripts/background.js"
    ]
  },
  "commands": {
    "desktop-text-capture-instant": {
      "suggested_key": {
        "default": "Ctrl+Shift+I",
        "mac": "Command+Shift+I"
      },
      "description": "Desktop Text Capture (Instant)"
    },
    "desktop-text-capture-3s-delay": {
      "suggested_key": {
        "default": "Ctrl+Shift+U",
        "mac": "Command+Shift+U"
      },
      "description": "Desktop Text Capture (3s delay)"
    },
    "get-image-from-clipboard": {
      "suggested_key": {
        "default": "Ctrl+Shift+C",
        "mac": "Command+Shift+C"
      },
      "description": "Get image from clipboard"
    }
  },
  "action": {
    "default_icon": {
      "16": "images/copyfish-16.png",
      "32": "images/copyfish-32.png",
      "48": "images/copyfish-48.png",
      "128": "images/copyfish-128.png"
    },
    "default_title": "__MSG_appName__"
  },
  "default_locale": "en",
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "images/copyfish-16.png",
    "32": "images/copyfish-32.png",
    "48": "images/copyfish-48.png",
    "128": "images/copyfish-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "copyfish@a9t9.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "scripting",
    "storage",
    "notifications",
    "nativeMessaging",
    "clipboardRead"
  ],
  "short_name": "__MSG_appShortName__",
  "version": "6.3.17",
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "message-dialog.html",
        "dialog.html",
        "config/config.json",
        "images/gear.png",
        "images/outside.png",
        "images/close.png",
        "images/translate.png",
        "images/deepl.jpg",
        "images/copyfish-32.png"
      ]
    }
  ]
}