Examine source code of Advanced Volume Control

{
  "manifest_version": 2,
  "name": "Volume Control",
  "version": "2.0.3",
  "description": "Boost audio volume up to 600% with EQ presets, per-tab controls, and audio effects.",
  "author": "Your Name",
  "homepage_url": "https://ko-fi.com/dcjdono",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Volume Control",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true,
    "browser_style": false
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://*.youtube.com/shorts/*",
        "*://youtube.com/shorts/*",
        "*://www.youtube.com/shorts/*",
        "*://m.youtube.com/shorts/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "volume-control@yourdomain.com",
      "strict_min_version": "58.0"
    }
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+A",
        "mac": "Command+Shift+A"
      },
      "description": "Open Volume Control popup"
    }
  }
}