Examine source code of Randvidious

{
  "name": "Randvidious",
  "version": "0.8.0",
  "manifest_version": 3,
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "randomize.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "img/forward_16.png",
    "32": "img/forward_32.png",
    "64": "img/forward_64.png",
    "128": "img/forward_128.png",
    "256": "img/forward_256.png",
    "512": "img/forward_512.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Randvidious Settings",
    "default_icon": {
      "16": "img/forward_16.png",
      "32": "img/forward_32.png",
      "64": "img/forward_64.png",
      "128": "img/forward_128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4c08633c-137a-4524-ba40-c02924c216f3}",
      "strict_min_version": "109.0"
    }
  },
  "options_ui": {
    "page": "popup.html"
  },
  "permissions": [
    "storage",
    "alarms",
    "tabs",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "*://*.youtube.com/*"
  ]
}