Examine source code of Open in CyberChef

{
  "manifest_version": 2,
  "name": "Open in CyberChef",
  "short_name": "CyberChef",
  "description": "Adds an open selected text in CyberChef option to the right-click context menu. CyberChef is a tool that can decode, decipher, and uncompress data in a wide variety of formats.",
  "version": "0.0.4",
  "permissions": [
    "storage",
    "contextMenus",
    "tabs"
  ],
  "icons": {
    "16": "assets/cyberchef-16x16.png",
    "48": "assets/cyberchef-48x48.png",
    "128": "assets/cyberchef-128x128.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "background": {
    "page": "background.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{18e2eddf-0137-4dcc-bbd4-abf906665bd8}"
    }
  }
}