Examine source code of Auto Mute & Skip

{
  "manifest_version": 3,
  "name": "Auto Mute & Skip",
  "version": "1.0.2",
  "description": "Automatically skip YouTube ads and mute them. Latest update will shorted the ad length to 5 second",
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "action": {
    "default_popup": "Popup.html",
    "default_icon": {
      "16": "icons/icon.png",
      "48": "icons/icon.png",
      "128": "icons/icon.png"
    }
  },
  "icons": {
    "48": "icons/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "anti.ads.mute.skip@gmail.com",
      "strict_min_version": "58.0"
    }
  }
}