Examine source code of Send to CyberChef

{
  "author": "igorlogius",
  "homepage_url": "https://github.com/igorlogius/send-to-cyberchef",
  "manifest_version": 2,
  "name": "Send to CyberChef",
  "description": "Adds a context entry to send selected text to a CyberChef instance",
  "version": "1.0.2",
  "permissions": [
    "activeTab",
    "storage",
    "menus"
  ],
  "icons": {
    "512": "icon.png"
  },
  "browser_action": {
    "default_area": "navbar"
  },
  "options_ui": {
    "page": "options.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{70f47474-4332-4d59-b650-159304a04f4e}"
    }
  }
}