Examine source code of YouTube Transcript

{
  "manifest_version": 3,
  "name": "Youtube Transcript",
  "version": "2.1",
  "description": "Extracts YouTube transcript to a simple text file. One click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "grab-transcript@project.local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png",
      "256": "icons/icon256.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png"
  },
  "host_permissions": [
    "https://www.youtube.com/*"
  ]
}