Examine source code of OnType Translate

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "version": "1.5.8",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "permissions": [
    "storage",
    "menus",
    "https://api.mymemory.translated.net/*",
    "https://api-free.deepl.com/*",
    "https://api.deepl.com/*",
    "https://deepl-short-proxy.gutoperin.workers.dev/*"
  ],
  "optional_permissions": [
    "https://translation.googleapis.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "background": {
    "scripts": [
      "lib/browser-polyfill.js",
      "background.js"
    ]
  },
  "options_ui": {
    "page": "popup/popup.html",
    "browser_style": true
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "19": "assets/icons/icon-19.png",
      "38": "assets/icons/icon-38.png"
    }
  },
  "icons": {
    "16": "assets/icons/icon-16.png",
    "48": "assets/icons/icon-48.png",
    "96": "assets/icons/icon-96.png",
    "128": "assets/icons/icon-128.png"
  },
  "homepage_url": "https://github.com/augustocesarperin/ontype-translator-extension",
  "commands": {
    "toggle-translation": {
      "suggested_key": {
        "default": "Alt+L"
      },
      "description": "Habilita/desabilita a tradução automática"
    },
    "translate-now": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y"
      },
      "description": "Traduz texto imediatamente"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "fastranslate@augustocesarperin.dev",
      "strict_min_version": "121.0"
    }
  }
}