manifest.json

{
  "manifest_version": 3,
  "name": "YouTube Script Extractor",
  "version": "1.0.4",
  "description": "Extract YouTube subtitles, including section titles, with one click and copy them to the clipboard or download as a TXT file.",
  "permissions": ["activeTab", "storage", "clipboardWrite", "alarms"],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "background": {
    "service_worker": "js/background.js"
  },
  "content_scripts": [
    {
      "matches": ["*://*.youtube.com/*"],
      "js": ["js/content.js"]
    }
  ],
  "action": {
    "default_popup": "html/popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  }
}