Examine source code of YouTube Download

{
  "web_accessible_resources": [
    "icon/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{deb7a278-b6f0-42d8-a8e0-36a367e6b4c3}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "92.0"
    }
  },
  "name": "YouTube Download",
  "icons": {
    "16": "icon/icon_16.png",
    "48": "icon/icon_48.png",
    "128": "icon/icon_128.png"
  },
  "background": {
    "scripts": [
      "lib/background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "version": "1.31",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/watch*"
      ],
      "run_at": "document_end",
      "exclude_matches": [
        "*://accounts.youtube.com/*"
      ],
      "js": [
        "lib/converter.js",
        "lib/youtube_com.js",
        "lib/loader.js"
      ]
    },
    {
      "matches": [
        "*://yt5s.in/*"
      ],
      "run_at": "document_start",
      "js": [
        "lib/yt5s.js"
      ]
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "lib/csvideobeam.js",
        "lib/csvideoforge.js",
        "lib/csvideoloom.js",
        "lib/csvideoharbor.js"
      ]
    }
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self';",
  "browser_action": {
    "default_icon": {
      "19": "icon/icon_19.png",
      "38": "icon/icon_38.png"
    },
    "default_title": "Open yt5s.in to download this video"
  },
  "permissions": [
    "tabs",
    "downloads",
    "storage",
    "<all_urls>",
    "webRequest",
    "webNavigation",
    "webRequestBlocking"
  ],
  "description": "Minimal YouTube download — Download button opens yt5s.in to fetch the video."
}