Volume Booster Plus

Volume Booster Plus will increase the system sound up to 1000% from the maximum sound! Boost audio with sound booster extension.

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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_extName__",
  "description": "__MSG_description__",
  "default_locale": "en",
  "version": "1.2.1",
  "manifest_version": 3,
  "icons": {
    "128": "image/logo_128x128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_end",
      "js": [
        "cs.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "unlimitedStorage",
    "gcm",
    "notifications",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "service_worker": "bg.js"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "128": "image/logo_128x128.png"
    }
  }
}