Examine source code of YouTube Profile Switcher

{
  "manifest_version": 3,
  "name": "YouTube Profile Switcher",
  "version": "1.1",
  "description": "Quickly switch between saved speed and quality profiles for YouTube videos.",
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "*://*.youtube.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-profile-switcher@ahmed.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "commands": {
    "apply-profile-1": {
      "suggested_key": {
        "default": "Alt+Shift+1"
      },
      "description": "Apply Profile assigned to Slot 1"
    },
    "apply-profile-2": {
      "suggested_key": {
        "default": "Alt+Shift+2"
      },
      "description": "Apply Profile assigned to Slot 2"
    },
    "apply-profile-3": {
      "suggested_key": {
        "default": "Alt+Shift+3"
      },
      "description": "Apply Profile assigned to Slot 3"
    },
    "apply-profile-4": {
      "suggested_key": {
        "default": "Alt+Shift+4"
      },
      "description": "Apply Profile assigned to Slot 4"
    }
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png",
    "512": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "inject.js"
      ],
      "matches": [
        "*://*.youtube.com/*"
      ]
    }
  ]
}