HTML5 media speed controller + subs

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "HTML5 media speed controller + subs",
  "description": "Speed controls and subtitles for HTML5 media.",
  "options_page": "options.html",
  "manifest_version": 3,
  "version": "1.70",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "style.css"
      ],
      "js": [
        "balancetext.min.js",
        "speedcontrol.js"
      ],
      "all_frames": true
    }
  ],
  "permissions": [
    "fontSettings",
    "storage"
  ],
  "action": {
    "default_icon": "icon.png"
  },
  "icons": {
    "128": "icon.png"
  }
}