M4A to MP3

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "version": "1.0",
    "name": "__MSG_appName__",
    "description": "__MSG_shortDesc__",
    "default_locale": "en",
    "permissions": [
        "downloads",
        "storage",
        "contextMenus"
    ],
    "optional_host_permissions": [
        "*:\/\/*\/*"
    ],
    "homepage_url": "https:\/\/www.notion.so\/swaponline\/Mp3-Converter-4a3b59a3bb2b47d5ad6012202f9fc198",
    "background": {
        "service_worker": "worker.js"
    },
    "sandbox": {
        "pages": [
            "\/data\/window\/mp3\/decoder\/index.html"
        ]
    },
    "icons": {
        "16": "\/data\/icons\/icon-16.png",
        "32": "\/data\/icons\/icon-32.png",
        "64": "\/data\/icons\/icon-64.png",
        "128": "\/data\/icons\/icon-128.png",
        "256": "\/data\/icons\/icon-256.png",
        "512": "\/data\/icons\/icon-512.png"
    },
    "offline_enabled": true,
    "action": [],
    "commands": {
        "_execute_action": []
    }
}