Countdown for browser

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "manifest_version": 3,
    "name": "Countdown for browser",
    "version": "0.5",
    "description": "Countdown and Session Timer for browser",
    "icons": {
        "16": "icons\/logo.png",
        "48": "icons\/logo.png",
        "128": "icons\/logo.png"
    },
    "permissions": [
        "tabs",
        "scripting",
        "storage",
        "clipboardRead"
    ],
    "background": {
        "service_worker": "background.js"
    },
    "host_permissions": [
        "http:\/\/*\/*",
        "https:\/\/*\/*"
    ],
    "action": {
        "default_title": "Countdown and Session Timer",
        "default_popup": "key.html"
    },
    "content_scripts": [
        {
            "matches": [
                "https:\/\/*\/*"
            ],
            "exclude_matches": [
                "https:\/\/extensionpay.com\/*"
            ],
            "js": [
                "jquery-3.6.0.min.js",
                "content.js",
                "confetti.min.js"
            ],
            "run_at": "document_start"
        }
    ]
}