manifest.json

{
  "name": "Live Chat Overlay",
  "description": "Restyle the YouTube popout chat so you can overlay it for livestreams",
  "manifest_version": 3,
  "version": "0.4.26",
  "homepage_url": "https://github.com/aaronpk/live-chat-overlay",
  "icons": {
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "activeTab"
  ],
  "host_permissions": [
    "https://youtube.com/*",
    "https://www.youtube.com/*",
    "https://studio.youtube.com/*",
    "http://localhost:*/*",
    "http://127.0.0.1:*/*",
    "ws://localhost:*/*"
  ],
  "content_scripts": [{
    "css": ["youtube.css"],
    "js": ["jquery.js", "youtube.js"],
    "all_frames": true,
    "matches": ["https://youtube.com/live_chat*", "https://www.youtube.com/live_chat*", "https://studio.youtube.com/live_chat*", "http://localhost:*/show*"]
  }],
  "options_ui": {
    "page": "settings/options.html"
  }
}